Chondroid Syringoma. Cytokeratin 20 Immunolocalization of Merkel Cells and Reappraisal of Apocrine Folliculo-Sebaceous Differentiation
|
|
- Valentine Elliott
- 5 years ago
- Views:
Transcription
1 Chondroid Syringoma Cytokeratin 20 Immunolocalization of Merkel Cells and Reappraisal of Apocrine Folliculo-Sebaceous Differentiation Mohamed E. Salama, MD; Muhammad Azam, MD; Chan K. Ma, MD; Adrian Ormsby, MBChB; Richard J. Zarbo, MD, DMD; Mahul B. Amin, MD; Min W. Lee, MD Context. Chondroid syringoma (CS) is a benign cutaneous adnexal tumor with epithelial and stromal components. Epithelial components derived from folliculo-sebaceous-apocrine germ are evident in apocrine but not in eccrine CS. Objectives. To further characterize pilosebaceous differentiation and to identify the presence of Merkel cells in the areas of follicular differentiation. Design. Histologic type, folliculo-sebaceous differentiation, character of stroma, and presence or absence of Merkel cells by cytokeratin (CK) 20 immunoreactivity were evaluated in 25 CSs (22 apocrine and 3 eccrine) from the surgical pathology files of Henry Ford Hospital (Detroit, Mich). Results. Most CSs occurred in the head and neck region of patients aged 40 years or older. We found no significant difference in sex, age, or location between apocrine and eccrine types. The stroma varied from myxoid (100%) to chondroid (59%), with various amounts of fat (59%) and ossification identified in 2 cases (9%) of apocrine type, but was homogeneously myxoid in the eccrine type. Follicular and sebaceous differentiation was found in 64% and 32% of apocrine CSs, respectively. Only 2 (14%) apocrine CSs with follicular differentiation were positive for CK20 (a few scattered cells in one case and numerous grouped cells in the other in association with follicular epithelium). No correlation was found between type of stroma and the presence of Merkel cells. Scattered Merkel cells were identified in 83% of normal hair follicles and in 33.3% of normal epidermis. Conclusion. A high proportion of apocrine CSs show folliculo-sebaceous differentiation. The presence of Merkel cells in foci of follicular differentiation of CS supports the hypothesis that Merkel cells may be an integral constituent of follicles. To our knowledge, the presence of Merkel cells in CS, particularly in proliferative form, has not been described previously in the literature. (Arch Pathol Lab Med. 2004;128: ) Mixed tumors of skin are composed of both epithelial and mesenchymal components and are histologically similar to benign mixed tumors of salivary glands. 1 3 The first case is believed to have been reported by Nasse in ,4 In 1961, Hirsch and Helwig 5 reported a large series in which they coined the term chondroid syringoma (CS) for these tumors, owing to the presence of a sweat gland like epithelial component and frequent cartilaginous-like stroma. In the same year, Headington 3 recognized 2 types, apocrine and eccrine. The apocrine type demonstrates irregular branching tubules (tubulocystic pattern) lined by at least 2-cell-thick epithelium. The eccrine type is characterized by rather uniform, small, round Accepted for publication April 30, From the Departments of Pathology, Henry Ford Hospital, Detroit, Mich (Drs Salama, Ma, Ormsby, Zarbo, and Lee), North Ottawa Community Hospital, Grand Haven, Mich (Dr Azam), and Emory University, Atlanta, Ga (Dr Amin). Presented in part at the 35th Annual Meeting of the American Society of Dermatopathology, Denver, Colo, October 29 November 1, The authors have no relevant financial interest in the products or companies described in this article. Reprints: Min W. Lee, MD, Department of Pathology, Henry Ford Hospital, 2799 W Grand Blvd, Detroit, MI ( mlee3@ hfhs.org). tubules that are evenly spaced within a myxoid-chondroid matrix. Clinically, CSs are relatively uncommon tumors. 6 Most are benign, but they may recur when not excised completely. Several cases of malignant CS with metastasis have been reported. 2,7 10 Histologically, these tumors demonstrate a wide spectrum of changes. In addition to the tubules, the epithelial cells may also form nests, cords, single cells, micropapillae, and keratinous cysts. The stroma is usually fibrous and demonstrates frequent myxochondroid changes. In addition to apocrine and eccrine features, these tumors can have folliculo-sebaceous differentiation, particularly in the apocrine variety. This divergent differentiation in CS has been mentioned briefly in earlier reports by Requena et al 11 and Rodriguez-Diaz and Armijo. 12 The purpose of this study is to further appraise the morphologic spectrum of CS in a larger series with particular reference to pilosebaceous differentiation and clinicopathologic correlation. Owing to the frequent occurrence of hair follicle differentiation, we have performed immunostaining with cytokeratin (CK) 20 for identification of Merkel cells to examine the possibility that they also represent an integral part of follicular differentiation in CS. 986 Arch Pathol Lab Med Vol 128, September 2004 Pilosebaceous Differentiation in Chondroid Syringoma Salama et al
2 Figure 1. Chondroid syringoma. A, Apocrine type. Folliculo-sebaceous and apocrine epithelial component in myxoid and chondroid stroma (hematoxylin-eosin, original magnification 40). B, Eccrine type. Small nonbranching ducts in a myxoid stroma (hematoxylin-eosin, original magnification 100). MATERIALS AND METHODS Twenty-five cases of CS were retrieved from the surgical pathology files at Henry Ford Hospital (Detroit, Mich) during the years Clinical information obtained from the electronic medical records on all cases included age, sex, location, size, and clinical follow-up. Hematoxylin-eosin stained sections were available for the study in all 25 cases. Sections mounted on sialinized slides using formalin-fixed, paraffin-embedded tissues were used for anti-ck20 immunostaining (Dako Corporation, Carpinteria, Calif) with a Dako autostainer. After drying and deparaffinization, endogenous peroxidase activity was blocked by treatment with 3% hydrogen peroxide. Proteinase K enzyme digestion was used for 10 minutes. All cases and positive controls were incubated in diluted (1:300) CK20 antibodies for 30 minutes at room temperature. Negative controls were incubated for the same period of time in tris-buffered saline (Dako). Slides were further incubated in labeled streptavidin-biotin plus kit (Dako) followed by a high-sensitivity substrate chromogen system (AEC). All slides were counterstained in Mayer hematoxylin, washed in running tap water for 20 minutes, and cover-slipped with liquefied glycerol-gelatin. The presence and pattern of immunoreactivity was noted. Presence of 2-cell-thick lining epithelium with decapitation secretions was considered minimal criteria for apocrine differentiation. Follicular differentiation was determined by the presence of hair follicle germ, which was often associated with mesenchymal cells of follicular papillae or other mature follicular structures. Mature sebaceous cells, located in the epithelial tracts, were recognized by a vacuolated cytoplasm and scalloped nuclear border. No reliable histologic criteria for eccrine differentiation were Figure 2. A, Branching tubular lamina lined by 2-cell-thick epithelium (hematoxylin-eosin, original magnification 40). B, Apical snouts with decapitation secretions (arrows) (hematoxylin-eosin, original magnification 600). available, but we adopted the criteria for eccrine mixed tumor used by Headington. 3 RESULTS Mean patient age was 55 years (range, years), and we found no evidence of sex predilection (14 males, 11 females). Median size was 0.5 cm (range, cm). There was a predilection for the head and neck region (64%). Twenty-two cases were apocrine type (Figure 1, A), characterized by branching tubular lumina (Figure 2, A) lined by at least 2-cell-thick epithelium with apical snouts (Figure 2, B) and cytoplasmic granules (Figure 3, A). Only 3 cases showed eccrine differentiation (Figure 1, B). Apocrine CSs showed follicular and sebaceous differentiation in 64% and 32% of cases, respectively (Figure 3, B and C). Sebaceous differentiation was focal and subtle. Hyaline cells with intracytoplasmic eosinophilic inclusions representing myoepithelial differentiation in association with branching tubular structures were noticed in 8 apocrine CSs (Figure 3, D). Collagenous spherules were identified in 2 apocrine CSs. Apocrine lesions contained myxoid stroma (100%), chondroid stroma (59%), and ossification in only 2 cases (9%) (Figure 4, A). Twelve apocrine CSs showed focal ar- Arch Pathol Lab Med Vol 128, September 2004 Pilosebaceous Differentiation in Chondroid Syringoma Salama et al 987
3 Figure 3. Epithelial components of apocrine chondroid syringoma. A, Granular cytoplasm (hematoxylin-eosin, original magnification 3250). B, Follicular differentiation determined by presence of hair follicular germ and mesenchymal cells of follicular papillae (hematoxylin-eosin, original magnification 3100). C, Sebaceous cells with vacuolated cytoplasm (hematoxylin-eosin, original magnification 3400). D, Hyaline cells with intracytoplasmic eosinophilic inclusions (hematoxylin-eosin, original magnification 3400). eas of scattered adipocytes in the stroma, particularly around the myxoid areas, and 1 case had aggregates of adipocytes (Figure 4, B). None of these cases showed replacement of the stroma by adipocytes. All eccrine CSs were negative for adipocytes. None of the 3 eccrine CS cases showed apical snouts, pilosebaceous differentiation, hyaline cells, or chondroid stroma. Only 1 case, which was from the eyebrow and which had multifocal positive margins in the initial specimen, recurred after 4 years. All other tumors were enucleated and no recurrence was encountered. Normal overlying epidermis was seen in 12 cases of apocrine CS. Scattered Merkel cells were identified in normal hair follicles of 10 cases (83%) and in the basal layer of epidermis of 4 cases (33%) by CK20 immunostains. Only 2 apocrine CS specimens (14%) with follicular differentiation were positive for CK20, one case with a few scattered positive cells and the other with numerous positive cells, particularly in the areas of follicular differentiation (Figure 5). No correlation was found between types of stroma and the presence of Merkel cells. COMMENT Chondroid syringomas or mixed tumors of the skin are relatively rare cutaneous tumors, which usually arise in middle age with a predilection for the head and neck region. Clinically, CSs present as a slow-growing, nontender, firm, dermal or subcutaneous nodule or papule.13 It is usually adherent to the overlying epidermis with no fixation to the underlying fascia, which may be responsible for the common preoperative diagnosis of cyst. Most of the reported series showed a 2 3:1 male-female ratio, but Hirsch 988 Arch Pathol Lab Med Vol 128, September 2004 and Helwig5 reported a male-female ratio of 5:1. No sex predilection was identified in this series. The hallmark of these biphasic tumors is the spectrum of histologic changes, which is manifest by both epithelial and mesenchymal components. Myxoid change in the stroma was identified in all tumors, while chondroid change was recognized in 59% of cases. It would appear that the designated name of chondroid syringoma calls attention to an inconsistent histologic feature. Adipocytes are common constituents of the stroma, as seen in 59% of our apocrine CSs, but none of our cases showed extensive adipose contents, as described by Ohata and Hanada.14 The epithelial component of apocrine CS may manifest a spectrum of adnexal differentiation, including apocrine, follicular, and sebaceous types, while eccrine CSs lack other components. In 1952, Lennox et al15 suggested that mixed tumors may represent a variant of hydradenoma with mucinous metaplasia. Headington3 later classified these lesions into 2 types, apocrine and eccrine. Subsequent ultrastructural and immunohistochemical studies have favored an eccrine origin for these tumors16; however, after a period of controversy, most authors now agree that most of these tumors show apocrine differentiation. This contention is further supported by the frequent occurrence of folliculo-sebaceous differentiation in apocrine CS. Requena et al11 reported 8 cases of apocrine CS, all with evidence of follicular differentiation. Rodriguez-Diaz and Armijo12 reported 45% of 20 cases with follicular differentiation. In this study, we identified a slightly higher incidence of follicular differentiation (64%) in apocrine CSs. The follicular differentiation ranges from focal to widespread, with easily recognizable areas reminiscent of both Pilosebaceous Differentiation in Chondroid Syringoma Salama et al
4 Figure 4. Stromal components of apocrine chondroid syringoma (hematoxylin-eosin, original magnification 3100). A, Chondroid stroma and ossification. B, Aggregates of adipocytes surrounded by myxoid areas. infundibular and inferior segment of hair follicle. Sebaceous cells with abundant vacuolated cytoplasm and small nuclei with scalloped borders were focally present in the epithelial cords and tracts in association with follicular differentiation in 7 apocrine CSs (32%). Hyaline cells with pinkish, glassy cytoplasm with intracytoplasmic eosinophilic inclusions were found in 8 cases and represent myoepithelial differentiation in association with a tubuloglandular component. Merkel cells are found in adult epidermis and in the outer sheath of hair follicles. Cytokeratin 20 is a useful marker for highlighting both normal and neoplastic Merkel cells.17,18 Schultz and Hartschuh19 21 reported Merkel cells in other adnexal tumors, but to the best of our knowledge, this is the first report to study Merkel cells in CS. In our study, overlying epidermis was normal in 12 CSs. Scattered Merkel cells were identified in normal hair follicle and epidermis of 83% and 33% of cases, respectively. Only 2 apocrine CSs with follicular differentiation were positive for CK20, one case with a few immunoreactive cells and the other with numerous positive cells. The presence of Merkel cells with evidence of Merkel cell proliferation in foci of follicular differentiation of CS supports the hypothesis that Merkel cells may be an integral constituent of follicles, as tumor cells have a divergent phenotypic expression of folliculo-sebaceous-apocrine germ. Presence of Merkel cells is known also in benign tumors with follicular differentiation, but is extremely rare in malignant tumors with possible follicular differentiation, such as basal cell carcinoma The lack of consistent expression of Merkel cells in CS with follicular differentiation correlates with distribution of Merkel cells in only certain segments of the hair follicles. None of the eccrine tumors showed hyaline cells, folliculo-sebaceous differentiation, or Merkel cells. In conclusion, both apocrine and eccrine tumors may be associated with myxochondroid stroma and are designated as apocrine and eccrine CS, respectively. Apocrine CS is more common than eccrine CS and is not restricted to any specific site of origin. Apocrine CS shows folliculosebaceous differentiation, sharing the same folliculo-sebaceous-apocrine germ origin. Identification of Merkel cells as a proliferative form in apocrine CS may support the derivation of Merkel cells from folliculo-sebaceousapocrine germ or their precursor cells, although the origin of Merkel cells (cells with neuroendocrine differentiation) in the skin is not limited to follicular germ. The clinical significance of the presence of Merkel cells in apocrine CS is not known, but one may speculate that CS potentially can give rise to a Merkel cell neoplasm. References Figure 5. Merkel cells (CK20 monoclonal antibody, original magnification 3250). Arch Pathol Lab Med Vol 128, September Mills SE. Mixed tumor of the skin: a model of divergent differentiation. J Cutan Pathol. 1984;11: Harrist TJ, Aretz TH, Mihm MC Jr, Evans GW, Rodriquez FL. Cutaneous malignant mixed tumor. Arch Dermatol. 1981;117: Headington JT. Mixed tumors of skin: eccrine and apocrine types. Arch Dermatol. 1961;84: Nasse D. Die Geschwu lste der Speicheldru sen und verwandte Tumoren des Kopfes. Arch Klin Chir. 1892;44: Hirsch P, Helwig EB. Chondroid syringoma: mixed tumor of skin, salivary gland type. Arch Dermatol. 1961;84: Yavuzer R, Basterzi Y, Sari A, Bir F, Sezer C. Chondroid syringoma: a diagnosis more frequent than expected. Dermatol Surg. 2003;29: Redono C, Rocamora A, Villoria F, Garcia M. Malignant mixed tumor of the skin: malignant chondroid syringoma. Cancer. 1982;49: Shvili D, Rothem A. Fulminant metastasizing chondroid syringoma of the skin. Am J Dermatopathol. 1986;8: Pilosebaceous Differentiation in Chondroid Syringoma Salama et al 989
5 9. Trown K, Heenan PJ. Malignant mixed tumor of the skin (malignant chondroid syringoma). Pathology. 1994;26: Tsoitis G, Papdimitriou C, Kanitakis J, et al. Malignant cutaneous mixed tumor [abstract]. Am J Dermatopathol. 2000;22: Requena L, Sanchez Yus E, Santa Cruz DJ. Apocrine type of cutaneous mixed tumor with follicular and sebaceous differentiation. Am J Dermatopathol. 1992;14: Rodriguez-Diaz E, Armijo M. Mixed tumors with follicular differentiation: complex neoplasms of the primary epithelial germ. Int J Dermatol. 1995;34: Chen AH, Moreno EH, Houston B, Funk GF. Chondroid syringoma of the head and neck: clinical management and literature review. Ear Nose Throat J. 1996;75: Ohata C, Hanada M. Lipomatous apocrine mixed tumor of the skin. Am J Dermatopathol. 2003;25: Lennox B, Pearse AGE, Richards HG. Mucin-secreting tumors of the skin: with special reference to the so-called mixed-salivary tumor of the skin and its relation to hidradenoma. J Pathol Bacteriol. 1952;64: Terui T, Obata M, Tagami H. Immunohistochemical studies on epithelial cells in mixed tumor of the skin. J Cutan Pathol. 1986;13: Moll I, Kuhn C, Moll R. Cytokeratin 20 is a general marker of cutaneous Merkel cells while certain neuronal proteins are absent. J Invest Dermatol. 1995; 104: Scott MP, Helm KF. Cytokeratin 20: a marker for diagnosing Merkel cell carcinoma. Am J Dermatopathol. 1999;21: Hartschuh W, Schulz T. Immunohistochemical investigation of the different developmental stages of trichofolliculoma with special reference to the Merkel cell. Am J Dermatopathol. 1999;21: Schulz T, Hartschuh W. Merkel cells in nevus sebaceus: an immunohistochemical study. Am J Dermatopathol. 1995;17: Hartschuh W, Schulz T. Merkel cells are integral constituents of desmoplastic trichoepithelioma: an immunohistochemical and electron microscopic study. J Cutan Pathol. 1995;22: Schulz T, Hartschuh W. Merkel cells are absent in basal cell carcinomas but frequently found in trichoblastomas: an immunohistochemical study. J Cutan Pathol. 1997;24: Arch Pathol Lab Med Vol 128, September 2004 Pilosebaceous Differentiation in Chondroid Syringoma Salama et al
BSD 2015 Case 19. Female 21. Nodule on forehead. The best diagnosis is:
BSD 2015 Case 19 Female 21. Nodule on forehead. The best diagnosis is: A. mixed tumour of skin B. porocarcinoma C. nodular hidradenoma D. metastatic adenocarcinoma BSD 2015 Case 19 Female 21 Nodule on
More informationSkin Adnexal Tumors - A Histopathological Spectrum at a Tertiary Care Hospital
Original Article GCSMC J Med Sci Vol (VI) No (I) January-June 2017 Skin Adnexal Tumors - A Histopathological Spectrum at a Tertiary Care Hospital Neeraja Barve*, Hansa Goswami**, Urvi Parikh *** Abstract
More informationApocrine and eccrine adnexal tumors
Apocrine and eccrine adnexal tumors Timothy McCalmont, MD University of California San Francisco, CA Past misguided notions Syringoma is eccrine Eccrine poroma rather than eccrine or apocrine poroma Spiradenoma
More informationApocrine and eccrine adnexal tumors
Apocrine and eccrine adnexal tumors Timothy McCalmont, MD University of California San Francisco, CA ECCRINE TUMORS Generally uncommon, because the sweat apparatus has little proliferative potential (hyperproliferation
More informationWhat is new on adnexal neoplasms. Omar P. Sangueza, MD. Professor and Director of Dermatopathology. Wake Forest University School of Medicine
What is new on adnexal neoplasms Omar P. Sangueza, MD Professor and Director of Dermatopathology Wake Forest University School of Medicine Winston Salem, North Carolina Carney complex is an autosomal dominant
More informationPapillary Lesions of the Breast A Practical Approach to Diagnosis. (Arch Pathol Lab Med. 2016;140: ; doi: /arpa.
Papillary Lesions of the Breast A Practical Approach to Diagnosis (Arch Pathol Lab Med. 2016;140:1052 1059; doi: 10.5858/arpa.2016-0219-RA) Papillary lesions of the breast Span the spectrum of benign,
More informationBasal cell carcinoma 5/28/2011
Goal of this Presentation A practical approach to the diagnosis of cutaneous carcinomas and their mimics Thaddeus Mully, MD University of California San Francisco To review common non-melanoma skin cancers
More informationJournal of International Academy of Forensic Science & Pathology (JIAFP)
Journal of International Academy of Forensic Science & Pathology (JIAFP) ISSN 2395-0722 MICROCYSTIC ADNEXAL CARCINOMA-A CASE REPORT WITH REVIEW OF LITERATURE Case Report Sulakshana M S 1,Natarajan M 2
More informationDiseases of the breast (1 of 2)
Diseases of the breast (1 of 2) Introduction A histology introduction Normal ducts and lobules of the breast are lined by two layers of cells a layer of luminal cells overlying a second layer of myoepithelial
More information3. Histopathology. 1. Introduction. 2. Case History. Volume 6 Issue 4, April Licensed Under Creative Commons Attribution CC BY
Spiradenocylindroma with Trichoepithelioma A Collision Tumor with Multiple Differentiation R. Lavanya 1, S. K. Sridevi 2, P. Viswanathan 3, P. V. S.Prasad 4 1 II nd Year Post Graduate, Department of Pathology,
More informationAppendageal skin tumors
Appendageal skin tumors Ibrahim Khalifeh, M.D. Associate Professor Department of Pathology American University of Beirut Medical Center Beirut, Lebanon Appendageal tumors Neoplasms whose differentiation
More informationMapping Basal Cell and Squamous Carcinoma By 10 Min CK5 Direct Immunohistochemistry on Frozen Section Skin Tissues during Mohs Micrographic Surgery
Mapping Basal Cell and Squamous Carcinoma By 10 Min CK5 Direct Immunohistochemistry on Frozen Section Skin Tissues during Mohs Micrographic Surgery Robert Glinert, MD and Song Q. Zhao, MD, Ph.D., MPH Department
More informationA 5 Year Histopathological Study of Skin Adnexal Tumors at a Tertiary Care Hospital
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) e-issn: 2279-0853, p-issn: 2279-0861.Volume 14, Issue 4 Ver. VII (Apr. 2015), PP 01-05 www.iosrjournals.org A 5 Year Histopathological Study of Skin
More informationCluster designation 5 staining of normal and non-lymphoid neoplastic skin*
J Cutan Pathol 2005: 32: 50 54 Copyright # Blackwell Munksgaard 2005 Blackwell Munksgaard. Printed in Denmark Journal of Cutaneous Pathology Cluster designation 5 staining of normal and non-lymphoid neoplastic
More informationBASAL CELL CARCINOMA WITH ECCRINE DIFFERENTIATION: A RARE ENTITY Divvya B 1, Rehana Tippoo 2, P. Viswanathan 3, B. Krishnaswamy 4, A.
BASAL CELL CARCINOMA WITH ECCRINE DIFFERENTIATION: A RARE ENTITY Divvya B 1, Rehana Tippoo 2, P. Viswanathan 3, B. Krishnaswamy 4, A. Anvar Ali 5 HOW TO CITE THIS ARTICLE: Divvya B, Rehana Tippoo, P. Viswanathan,
More informationSalivary gland tumor cytologic and histologic correlation: Algorithmic and risk stratification based approaches
Salivary gland tumor cytologic and histologic correlation: Algorithmic and risk stratification based approaches Christopher C. Griffith, MD, PhD Raja R. Seethala, MD 1. Salivary gland tumor cytology: A
More informationWhitney A. High, MD, JD, MEng
ADS Dermatopathology Meeting 2014 Selected Adnexal Tumors Whitney A. High, MD, JD, MEng Associate Professor, Dermatology & Pathology Director of Dermatopathology (Dermatology) University of Colorado School
More informationPLEOMORPHIC ADENOMA ( BENIGN MIXED TUMOR )
( BENIGN MIXED TUMOR ) Grossly, the tumor is freely movable, solid, sometimes lobulated and occasionally cystic. If recurrent, multinodular masses are common. Histologically, within a fibrous capsule,
More informationCutaneous Adnexal Tumors
Cutaneous Adnexal Tumors Lesions with Predominant Follicular Differentiation Special Emphasis on Basal Cell Carcinoma 2014-04-01 Prof. Dr. med. Katharina Glatz Pathologie Cutaneous Adnexal Tumors Hair
More informationCoordinate Expression of Cytokeratins 7 and 20 in Prostate Adenocarcinoma and Bladder Urothelial Carcinoma
Anatomic Pathology / CYTOKERATINS 7 AND 20 IN PROSTATE AND BLADDER CARCINOMAS Coordinate Expression of Cytokeratins 7 and 20 in Prostate Adenocarcinoma and Bladder Urothelial Carcinoma Nader H. Bassily,
More informationInternational Journal of Health Sciences and Research ISSN:
International Journal of Health Sciences and Research www.ijhsr.org ISSN: 2249-9571 Original Research Article A Clinicopathological Study of Adnexal Tumors of Skin in a Tertiary Care Research Hospital
More informationSimplified approach to cutaneous adnexal tumors
Simplified approach to cutaneous adnexal tumors Chandra Smart, MD Associate Clinical Professor UCLA Department of Pathology Introduction: Cutaneous adnexal neoplasms (CANs) are a diverse group of tumors
More informationTrichofolliculoma of the Guinea Pig 1,2
Trichofolliculoma of the Guinea Pig 1,2 Raymond D. Ediger, Garrett S. Dill, Jr., and Robert M. Kovatch, Aerobiology and Evaluation Laboratories and Medical Sciences Laboratories, Fort Detrick, Frederick,
More informationHistopathological Study of Skin Adnexal Tumors - A Ten Years Study
Original Research Article Histopathological Study of Skin Adnexal Tumors - A Ten Years Study V. Srinivas Kumar 1, V. Geeta 1*, Nikhil Kumar Voruganti 2, O. Shravan Kumar 3, Tamilarasi 4 1 Associate Professor
More informationDisclosure. Relevant Financial Relationship(s) None. Off Label Usage None MFMER slide-1
Disclosure Relevant Financial Relationship(s) None Off Label Usage None 2013 MFMER slide-1 Case Presentation A 43 year old male, with partial nephrectomy for a right kidney mass 2013 MFMER slide-2 2013
More informationGlycogen-rich adenocarcinoma in the lower lip: report of a case with particular emphasis on differential diagnosis
Open Journal of Stomatology, 2011, 1, 109-113 doi:10.4236/ojst.2011.13017 Published Online September 2011 (http://www.scirp.org/journal//). Glycogen-rich adenocarcinoma in the lower lip: report of a case
More informationCase Report A Rare Cutaneous Adnexal Tumor: Malignant Proliferating Trichilemmal Tumor
Case Reports in Medicine Volume 2015, Article ID 742920, 4 pages http://dx.doi.org/10.1155/2015/742920 Case Report A Rare Cutaneous Adnexal Tumor: Malignant Proliferating Trichilemmal Tumor Omer Alici,
More informationSalivary Glands 3/7/2017
Salivary Glands 3/7/2017 Goals and objectives Focus on the entities unique to H&N Common board type facts Information for your future practice Salivary Glands Salivary Glands Major gland. Paratid. Submandibular.
More informationPapillary Lesions of the breast
Papillary Lesions of the breast Emad Rakha Professor of Breast Pathology The University of Nottingham Papillary lesions of the breast are a heterogeneous group of disease, which are characterised by neoplastic
More informationUpdate in Salivary Gland Pathology. Benjamin L. Witt University of Utah/ARUP Laboratories February 9, 2016
Update in Salivary Gland Pathology Benjamin L. Witt University of Utah/ARUP Laboratories February 9, 2016 Objectives Review the different appearances of a selection of salivary gland tumor types Establish
More informationDOWNLOAD OR READ : REVERSING MALIGNANT CHONDROID SYRINGOMA PDF EBOOK EPUB MOBI
DOWNLOAD OR READ : REVERSING MALIGNANT CHONDROID SYRINGOMA PDF EBOOK EPUB MOBI Page 1 Page 2 reversing malignant chondroid syringoma reversing malignant chondroid syringoma pdf reversing malignant chondroid
More informationDesmoplastic trichoepithelioma; a new case and review of the literature with emphasis on its differential diagnosis
Hong Kong J. Dermatol. Venereol. (2014) 22, 135-139 Case Report Desmoplastic trichoepithelioma; a new case and review of the literature with emphasis on its differential diagnosis M Concha-Rogazy, S Alvarez-Veliz,
More information- Selected Tumors of the Skin Appendages - Primary vs. Metastasis
- Selected Tumors of the Skin Appendages - Primary vs. Metastasis Napa Valley 2018 Victor G. Prieto, MD, PhD Chair of Pathology UT MD Anderson Cancer Center vprieto@mdanderson.org Napa Valley in May Introduction
More informationSynonyms. Nephrogenic metaplasia Mesonephric adenoma
Nephrogenic Adenoma Synonyms Nephrogenic metaplasia Mesonephric adenoma Definition Benign epithelial lesion of urinary tract with tubular, glandular, papillary growth pattern Most frequently in the urinary
More informationPathology Slides. [Pathology]
Pathology Slides MedicoNotes provides real laboratory pathological slides to aid you to differentiate between different pathological structures under microscope. www.mediconotes.com Histology slides example
More informationGross appearance of nodular hyperplasia in material obtained from suprapubic prostatectomy. Note the multinodular appearance and the admixture of
Tiền liệt tuyến Tiền liệt tuyến Gross appearance of nodular hyperplasia in material obtained from suprapubic prostatectomy. Note the multinodular appearance and the admixture of solid and microcystic areas.
More informationCASE REPORT SOLITARY SEBACEOUS NEVUS OF JADASSOHN COMPLICATED BY SQUAMOUS CELL CARCINOMA AND BASAL CELL CARCINOMA
CASE REPORT Dennis H. Kraus, MD, Section Editor SOLITARY SEBACEOUS NEVUS OF JADASSOHN COMPLICATED BY SQUAMOUS CELL CARCINOMA AND BASAL CELL CARCINOMA Ahmad Ridzwan Arshad, FRCS, 1 Wan S. Azman, MS, 1 Ayadurai
More informationAmerican College of Mohs Surgery. Diagnostic Quality Control Program (Review of Answers)
American College of Mohs Surgery Diagnostic Quality Control Program 2010 (Review of Answers) Question 1 A flesh-colored plaque on the right ala of an otherwise healthy 57 year-old male is referred for
More informationCase 18. M75. Excision of mass on scalp. Clinically SCC. The best diagnosis is:
Case 18 M75. Excision of mass on scalp. Clinically SCC. The best diagnosis is: A. Pilomatrical carcinoma B. Adnexal carcinoma NOS C. Metastatic squamous cell carcinoma D.Primary squamous cell carcinoma
More information21/07/2017. Hobnail endothelial cells are not the same as epithelioid endothelial cells
UPDATE IN CUTANEOUS VASCULAR S DERMATOPATHOLOGY SESSION BELFAST PATHOLOGY JUNE 21/2017 Dr E Calonje St John s Institute of Dermatology, London, United Kingdom THE FAMILY OF VASCULAR S WITH EPITHELIOID
More informationResearch Article Histopathological Study of Skin Adnexal Tumours Institutional Study in South India
Skin Cancer, Article ID 543756, 4 pages http://dx.doi.org/10.1155/2014/543756 Research Article Histopathological Study of Skin Adnexal Tumours Institutional Study in South India Ankit Sharma, 1 Deepak
More informationOriginal Article Primary malignant mixed tumor of bone: a case report
Int J Clin Exp Pathol 2015;8(7):8433-8437 www.ijcep.com /ISSN:1936-2625/IJCEP0007490 Original Article Primary malignant mixed tumor of bone: a case report Zhansan Su 1, Zhi Li 1, Baoan Liu 2 1 Department
More information1 NORMAL HISTOLOGY AND METAPLASIAS
1 NORMAL HISTOLOGY AND METAPLASIAS, MD Anatomy and Histology 1 Metaplasias 2 ANATOMY AND HISTOLOGY The female breast is composed of a branching duct system, which begins at the nipple with the major lactiferous
More informationINTEGUMENTARY 1-Epidermis, 2-Dermis, Structure of thick and thin skin I- Epidermis . Stratum basale
INTEGUMENTARY The skin (integument, cutis ) and its derivatives constitute the integumentary system. It form the external covering of the body and is the largest organ of the body. The skin consists of
More informationCase Report Nevus Lipomatosus Superficialis with a Folliculosebaceous Component: Report of 2 Cases
SAGE-Hindawi Access to Research Pathology Research International Volume 2011, Article ID 105973, 4 pages doi:10.4061/2011/105973 Case Report Nevus Lipomatosus Superficialis with a Folliculosebaceous Component:
More informationCase Report Endocrine Mucin-Producing Sweat Gland Carcinoma, a Histological Challenge
Hindawi Volume 2017, Article ID 6343709, 4 pages https://doi.org/10.1155/2017/6343709 Case Report Endocrine Mucin-Producing Sweat Gland Carcinoma, a Histological Challenge Mary Anne Brett, Samih Salama,
More informationAmerican Journal of. Cancer Case Reports
American Journals of Cancer Case Reports http://ivyunion.org/index.php/ajccr/index Cancer Case Reports AK H et al. American Journal of Cancer Case Reports 2013, 1:93-97 Vol. 1, Article ID Page 201300216,
More informationLesions Mimicking Adenoid Cystic Carcinoma. Diagnostic Problems in Salivary Gland Pathology An Update 5/29/2009
Diagnostic Problems in Salivary Gland Pathology An Update Lesions Mimicking Adenoid Cystic Carcinoma Stacey E. Mills, M.D. W.S. Royster Professor of Pathology Director of Surgical and Cytopathology University
More informationTissues. Tissues - Overview. Bio 101 Laboratory 3. Epithelial Tissues and Integument
Bio 101 Laboratory 3 Epithelial Tissues and Integument 1 Tissues Tissues to be examined under the microscope Epithelial Tissue Integument Connective Tissue **We will be doing muscle and nervous tissues
More information04/10/2018. Intraductal Papillary Neoplasms Of Breast INTRADUCTAL PAPILLOMA
Intraductal Papillary Neoplasms Of Breast Savitri Krishnamurthy MD Professor of Pathology Deputy Division Head The University of Texas MD Anderson Cancer Center 25 th Annual Seminar in Pathology Pittsburgh,
More informationFORELIMB SWEAT GLAND ADENOCARCINOMA IN A CAT
I: 2047-2051 ISSN: 2277 4998 FORELIMB SWEAT GLAND ADENOCARCINOMA IN A CAT ABEDI G 1, HESARAKI S 2, ASGHARI A 1* 1: Department of Clinical Science, Science and Research branch, Islamic Azad University,
More informationtumors (40 cases) accounting for 64% of the tumors.
Nepal Medical Association Building Exhibition Road, Kathmandu Journal of Pathology of Nepal (2015) Vol. 5, 727-732 Association of Clinical Pathologist of Nepal-2010 Journal of PATHOLOGY of Nepal www.acpnepal.com
More informationPulmonary Salivary Gland Type Tumors With Features of Malignant Mixed Tumor (Carcinoma Ex Pleomorphic Adenoma) A Clinicopathologic Study of Five Cases
Anatomic Pathology / Pulmonary Salivary Gland Type Tumors Pulmonary Salivary Gland Type Tumors With Features of Malignant Mixed Tumor (Carcinoma Ex Pleomorphic Adenoma) A Clinicopathologic Study of Five
More informationKidney Case 1 SURGICAL PATHOLOGY REPORT
Kidney Case 1 Surgical Pathology Report February 9, 2007 Clinical History: This 45 year old woman was found to have a left renal mass. CT urography with reconstruction revealed a 2 cm medial mass which
More informationDesmoplastic Melanoma R/O BCC. Clinical Information. 74 y.o. man with lesion on left side of neck r/o BCC
R/O BCC Sabine Kohler, M.D. Professor of Pathology and Dermatology Dermatopathology Service Stanford University School of Medicine Clinical Information 74 y.o. man with lesion on left side of neck r/o
More informationPrelab #4 BLOOD; BONE MARROW; RESPIRATORY; INTEGUEMENT Page 1
Prelab #4 BLOOD; BONE MARROW; RESPIRATORY; INTEGUEMENT Page 1 Blood Slide 101 This a classic slide of blood cells using a Wright stain. Inspect red blood cells and their appearance. Note the approximate
More informationSlide seminar. Asist. Prof. Jože Pižem, MD, PhD Institute of Pathology Medical Faculty, University of Ljubljana
Slide seminar Asist. Prof. Jože Pižem, MD, PhD Institute of Pathology Medical Faculty, University of Ljubljana Case 5 A 57-year-old man with a dermal/subcutaneous lesion on the scalp, which was interpreted
More informationEccrine Differentiation in Basal Cell Carcinoma
295S Eccrine Differentiation in Basal Cell Carcinoma Peter J. Heenan and Matthew S. Bogle Eccrine differentiation according to histologic and immuno-histochemical criteria was demonstrated in 16 of 66
More informationSkin (Integumentary System) Wheater, Chap. 9
Skin (Integumentary System) Wheater, Chap. 9 Skin (Integument) Consists of skin and associated derivatives Largest organ of body (21 ft 2 ; 9 lbs.; has 11 miles of blood vessels) Functions: Protection
More informationCellular Neurothekeoma
Cellular Neurothekeoma Scott W Binder, MD Pritzker Professor of Pathology & Dermatology Sr. Vice Chair Director, Pathology Clinical Services Chief, Dermatopathology Geffen/UCLA School of Medicine Clinical
More informationCase Report Clear Cell Basal Cell Carcinoma
SAGE-Hindawi Access to Research Volume 2011, Article ID 386921, 4 pages doi:10.4061/2011/386921 Case Report Clear Cell Basal Cell Carcinoma Deba P. Sarma, 1 Daniel Olson, 1 Jennifer Olivella, 1 Tracey
More informationDermatopathology Cytokeratin expression in pilonidal sinus
British Journal of Dermatology 2002; 146: 409 413. Dermatopathology Cytokeratin expression in pilonidal sinus I.KUROKAWA, S.NISHIJIMA,* K.SUZUKI, K.KUSUMOTO, H.SENSAKI, N.SHIKATA AND A.TSUBURA Department
More informationFour Different Tumors Arising in a Nevus Sebaceous
Published online: April 20, 2016 2016 The Author(s) Published by S. Karger AG, Basel 1662 6567/16/0081 0075$39.50/0 This article is licensed under the Creative Commons Attribution-NonCommercial 4.0 International
More informationAmong the benign intraepithelial melanocytic proliferations, Inflamed Conjunctival Nevi. Histopathological Criteria. Resident Short Reviews
Resident Short Reviews Inflamed conjunctival nevi (ICN) may suggest malignancy because of their rapid growth and atypical histology. The objective of this study was to characterize the diagnostic features
More informationA clinicopathologic study of skin appendageal tumors
Net Study A clinicopathologic study of skin appendageal tumors Pradeep S. Nair Department of Dermatology and Venereology, Medical College Hospital, Trivandrum- 695 011, Kerala, India Address for correspondence:
More informationNote: The cause of testicular neoplasms remains unknown
- In the 15- to 34-year-old age group, they are the most common tumors of men. - Tumors of the testis are a heterogeneous group of neoplasms that include: I. Germ cell tumors : 95%; all are malignant.
More informationVarious hereditary, acquired and neoplastic conditions can lead to cyst formation in the kidney.
Dr. Fatima AlAl-Hashimi Hashimi,, MD, FRCPath Salmaniya Medical Complex, Bahrain Various hereditary, acquired and neoplastic conditions can lead to cyst formation in the kidney. The most frequently encountered
More informationDisorders of Cell Growth & Neoplasia. Histopathology Lab
Disorders of Cell Growth & Neoplasia Histopathology Lab Paul Hanna April 2010 Case #84 Clinical History: 5 yr-old, West Highland White terrier. skin mass from axillary region. has been present for the
More informationBreast pathology. 2nd Department of Pathology Semmelweis University
Breast pathology 2nd Department of Pathology Semmelweis University Breast pathology - Summary - Benign lesions - Acute mastitis - Plasma cell mastitis / duct ectasia - Fat necrosis - Fibrocystic change/
More informationSkin. Kristine Krafts, M.D.
Skin Kristine Krafts, M.D. Skin Lecture Objectives Describe the functions of skin. Describe the structure, location and function of the cell types found in epidermis: keratinocytes, melanocytes, Langerhans
More informationBJD British Journal of Dermatology. Summary DERMATOPATHOLOGY
DERMATOPATHOLOGY BJD British Journal of Dermatology CD10 and CD34 in fetal and adult human hair follicles: dynamic changes in their immunohistochemical expression during embryogenesis and hair cycling
More informationMammary Nodular Hyperplasia in Intact R hesus Monkeys
Vet. Path. 10: 130-134 (1973) Mammary Nodular Hyperplasia in Intact R hesus Monkeys L. W NELSON and L. D. SHOTT Department of Pathology and Toxicology, Mead Johnson Research Center, Evansville, Ind., and
More informationSelect problems in cystic pancreatic lesions
Disclosure Select problems in cystic pancreatic lesions Five Prime Therapeutics shareholder Adicet Bio shareholder Bristol-Meyer Squibb advisory board grace.kim@ucsf.edu Pancreatic cystic lesions Intraductal
More informationThe expression of CD23 in cutaneous non-lymphoid neoplasms
J Cutan Pathol 2007: 34: 693 698 doi: 10.1111/j.1600-0560.2006.00685.x Blackwell Munksgaard. Printed in Singapore Copyright # Blackwell Munksgaard 2006 Journal of Cutaneous Pathology The expression of
More informationCPC 4 Breast Cancer. Rochelle Harwood, a 35 year old sales assistant, presents to her GP because she has noticed a painless lump in her left breast.
CPC 4 Breast Cancer Rochelle Harwood, a 35 year old sales assistant, presents to her GP because she has noticed a painless lump in her left breast. 1. What are the most likely diagnoses of this lump? Fibroadenoma
More informationdoi: /j.anl
doi: 10.1016/j.anl.2006.07.001 Synchronous unilateral parotid gland neoplasms of three different histological types Shuho Tanaka 1, Keiji Tabuchi 1, Keiko Oikawa 1, Rika Kohanawa 1, Hideki Okubo 1, Dai
More informationMALIGNANT POROMA SYNONYM: POROCARCINOMA ECCRINE POROMA MALIGNANT Divvya B 1, M. Valluvan 2, Rehana Tippoo 3, P. Viswanathan 4, R.
MALIGNANT POROMA SYNONYM: POROCARCINOMA ECCRINE POROMA MALIGNANT Divvya B 1, M. Valluvan 2, Rehana Tippoo 3, P. Viswanathan 4, R. Ramesh 5 HOW TO CITE THIS ARTICLE: Divvya B, M. Valluvan, Rehana Tippoo,
More information(From the Arnold Biological Laboratory, Brown University, Providence, Rhode Island) Materials and Methods
HISTOLOGY AND CYTOCHEMISTRY OF HUMAN SKIN XI. THF. DISTRIBUTION OF /~-GLucURONIDASE* BY WILLIAM MONTAGNA, PH.D. (From the Arnold Biological Laboratory, Brown University, Providence, Rhode Island) PLATES
More informationSpinal Cord Compression caused by Metastatic Epithelial Myoepithelial Carcinoma of the Parotid Gland
Spinal Cord Compression caused by Metastatic Epithelial Myoepithelial Carcinoma of the Parotid Gland Pages with reference to book, From 249 To 250 Irshad N. Soomro,Akber S. Hussainy,Rashida Ahmed,Sheema
More informationProliferative Epithelial lesions of the Breast. Sami Shousha, MD, FRCPath Charing Cross Hospital & Imperial College, London
Proliferative Epithelial lesions of the Breast Sami Shousha, MD, FRCPath Charing Cross Hospital & Imperial College, London Amman, November2013 Proliferative Epithelial Lesions of the Breast Usual type
More informationAcantholytic Anaplastic Extramammary Paget s Disease: A Case Report and Review of the Literature
Ann Dermatol Vol. 23, Suppl. 2, 2011 http://dx.doi.org/10.5021/ad.2011.23.s2.s226 CASE REPORT Acantholytic Anaplastic Extramammary Paget s Disease: A Case Report and Review of the Literature Yu-Jin Oh,
More informationIn the third part of the present study tumours which previous were described as basal cell tumours but now have been reclassified as trichoblastomas
170 6. SUMMARY Immunhistochemical investigations for identifying the histogenesis of basaloid neoplasias and hyperplasias in the mamma parenchyma of the bitch, for the use of the human nuclear protein
More informationBenign and malignant epithelial lesions: Seborrheic keratosis: A common benign pigmented epidermal tumor occur in middle-aged or older persons more
Benign and malignant epithelial lesions: Seborrheic keratosis: A common benign pigmented epidermal tumor occur in middle-aged or older persons more common on the trunk; but extremities, head and neck are
More informationSkin and Body Membranes Body Membranes Function of body membranes Cover body surfaces Line body cavities Form protective sheets around organs
Skin and Body Membranes Body Membranes Function of body membranes Cover body surfaces Line body cavities Form protective sheets around organs Classification of Body Membranes Epithelial membranes Cutaneous
More informationPleomorphic adenoma of breast - a case report and distinction with metaplastic carcinoma D Gupta, S Agrawal, N Trivedi, A Tewari
of breast - a case report and distinction with metaplastic carcinoma D Gupta, S Agrawal, N Trivedi, A Tewari Introduction, also known as mixed tumour, is a benign tumour which typically presents as a painless,
More informationconfusing, especially in small, limited biopsies. One such case of digital papillary adnexal adenocarcinoma with unusual histologic features will be
1 Cutaneous Adnexal Lesions: The Must-Know Stuff 2011 USCAP Annual Meeting Dermatopathology Companion Meeting Doina Ivan, M.D. University of Texas MD Anderson Medical Center, Houston, TX The diagnosis
More informationThe Utility Of Congo Red Stain And Cytokeratin Immunostain In The Detection Of Primary Cutaneous Amyloidosis
ISPUB.COM The Internet Journal of Pathology Volume 17 Number 1 The Utility Of Congo Red Stain And Cytokeratin Immunostain In The Detection Of Primary Cutaneous A,A Citation A, A.. The Internet Journal
More informationSkin and Body Membranes
4 Skin and Body Membranes PowerPoint Lecture Slide Presentation by Jerry L. Cook, Sam Houston University ESSENTIALS OF HUMAN ANATOMY & PHYSIOLOGY EIGHTH EDITION ELAINE N. MARIEB Skin and Body Membranes
More informationHistopathology of Skin Adnexal Tumors - A Two Year Retrospective Study at a Tertiary Care Hospital
Original Article Print ISSN: 2321-6379 Online ISSN: 2321-595X DOI: 10.17354/ijss/2016/616 Histopathology of Skin Adnexal Tumors - A Two Year Retrospective Study at a Tertiary Care Hospital Muktanjalee
More informationGastric Carcinoma with Lymphoid Stroma: Association with Epstein Virus Genome demonstrated by PCR
Gastric Carcinoma with Lymphoid Stroma: Association with Epstein Virus Genome demonstrated by PCR Pages with reference to book, From 305 To 307 Irshad N. Soomro,Samina Noorali,Syed Abdul Aziz,Suhail Muzaffar,Shahid
More informationCh 4. Skin and Body Membranes
Ch 4 Skin and Body Membranes TITLE HISTOLOGY SLIDES & NOTES ESSENTIAL QUESTION What tissues compose the integumentary system? Stratified Squamous Epithelium Stratified = several layers; Squamous = shape
More informationPapillary adenocarcinoma of the rete testis with adjacent hyperplasia: a case report
CASE REPORT Papillary adenocarcinoma of the rete testis with adjacent hyperplasia: a case report Carolina Polanco 1, Cooley G. Pantazis 2, Rolando Prieto 2, Kenneth A. Iczkowski 1 1. Medical College of
More informationSynchronous squamous cell carcinoma of the breast. and invasive lobular carcinoma
Sentani K et al. 1 Letter to the editor Synchronous squamous cell carcinoma of the breast and invasive lobular carcinoma Kazuhiro Sentani, 1 Takashi Tashiro, 2 Naohide Oue, 1 Wataru Yasui 1 1 Department
More informationDiplomate of the American Board of Pathology in Anatomic and Clinical Pathology
A 33-year-old male with a left lower leg mass. Contributed by Shaoxiong Chen, MD, PhD Assistant Professor Indiana University School of Medicine/ IU Health Partners Department of Pathology and Laboratory
More informationHistopathology: skin pathology
Histopathology: skin pathology These presentations are to help you identify, and to test yourself on identifying, basic histopathological features. They do not contain the additional factual information
More informationCYSTIC TUMORS OF THE KIDNEY JOHN N. EBLE, M.D. CYSTIC NEPHROMA
Page 1 CYSTIC TUMORS OF THE KIDNEY JOHN N. EBLE, M.D. Department of Pathology & Laboratory Medicine Phone (317) 274-4806 Medical Science A-128 FAX: (317) 278-2018 635 Barnhill Drive jeble @iupui.edu Indianapolis,
More informationDisclosures. Parathyroid Pathology. Objectives. The normal parathyroid 11/10/2012
Disclosures Parathyroid Pathology I have nothing to disclose Annemieke van Zante MD/PhD Assistant Professor of Clinical Pathology Associate Chief of Cytopathology Objectives 1. Review the pathologic features
More informationBREAST PATHOLOGY. Fibrocystic Changes
BREAST PATHOLOGY Lesions of the breast are very common, and they present as palpable, sometimes painful, nodules or masses. Most of these lesions are benign. Breast cancer is the 2 nd most common cause
More informationMyoepithelial carcinoma (malignant myoepithelioma) of the parotid gland arising in a pleomorphic adenoma
552 Royal Group of Hospitals Trust, Belfast, UK Department of Pathology W G McCluggage P G Toner Department of Otorhinolaryngology W J Primrose Correspondence to: Dr W G McCluggage, Department of Pathology,
More informationDiagnostic Cytology of Cancer Cases
Diagnostic Cytology of Cancer Cases Somporn Techangamsuwan Companion Animal Cancer Research Unit (CAC-RU) Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University 1 Tumor or Non-tumor
More information