Palisaded Neutrophilic and Granulomatous Dermatitis in Association with Subcutaneous Nodular and

Similar documents
BSD Self Assessment Workshop 7 th July 2013 CASE 27 RAC6123

Interstitial Granulomatous Dermatitis -A Case Report Associated with Rheumatoid Arthritis

Elsevier B.V.; この論文は出版社版でありま Right 引用の際には出版社版をご確認ご利用ください This is

More Non-infectious Granulomatous Diseases! Karolyn Wanat, MD Assistant Professor, Dermatology & Pathology University of Iowa

THE TIP OF THE ICEBERG SAMER BOLIS, DO PGY-3 LEHIGH VALLEY HEALTH NETWORK, ALLENTOWN PA

CPC. Chutika Srisuttiyakorn, M.D. Kobkul Aunhachoke, M.D. Phramongkutklao Hospital Bangkok, Thailand

A case of Sweet's syndrome with marked facial swelling and fluid collection

CASE REPORT GRANULOMA ANNULARE MIMICKING SARCOIDOSIS AND TREATED WITH ACITRETIN: A CASE REPORT

Case 1 History. William Tremaine, M.D. CP

Egyptian Dermatology Online Journal Vol. 6 No 1: 14, June 2010

Annular elastolytic giant cell granuloma presented with annular erythematous patches over the face and cheek in a Chinese lady

Granuloma annulare is a benign self-limited disease, first described by Colcott-Fox 1 in 1895 and Radcliffe-Crocker in 1902.

Citation The Journal of Dermatology, 37(8), available at

Scleritis LEN V KOH OD

Cutaneous extravascular necrotizing granuloma (Winkelmann granuloma): Confirmation of the association with systemic disease

In our paper, we suggest that tuberculosis and sarcoidosis are two ends of the same spectrum. Given the pathophysiological and clinical link between

Superficial Granulomatous Pyoderma of the Face: A Case Report and Review of the Literature

Interesting Case Series. Linear IgA Bullous Dermatosis

CLINICAL VIGNETTE Sarcoidosis: A Case Study Gloria Kim, M.D.

Sarcoidosis with Skin Manifestations - Two Case Reports and Review of Literature

Figure 7.1 Figure 7.2 Figure 7.3

Case 16.1 A 67-year-old Thai man from Nontaburi Chief complaint: Asymptomatic erythematous papules and plaques for 2 months Present illness: Two

A Tailored Approach to Uveitis and Associated Systemic Conditions Anthony DeWilde O.D.

Angiolupoid Sarcoidosis : A Clinicopathological Study of a Distinct Variant of Cutaneous Sarcoidosis

Update in deposition diseases

2/18/19. Case 1. Question

22 year old QH mare with regionally extensive alopecia and scaling on one front limb and ventral chest (Figure 1 and 2).

CASE REPORT ATYPICAL BULLOUS PYODERMA GANGRENOSUM WITH EARLY LESIONS MIMICKING CHICKEN POX

Nodular Muscular Sarcoidosis Extending to All Limb Muscles

Citation The Journal of dermatology, 37(1), available at

Egyptian Dermatology Online Journal Vol. 5 No 2:16, December Squamous Cell Carcinoma Arising on Extensive and Chronic Lupus Vulgaris

Glistening, Skin-Colored Nodule

OBSERVATION. Acute-Onset, Painful Acral Granuloma Annulare

Uncommon clinical presentations of leprosy: apropos of three cases

=ﻰﻤاﻤﺤﻠا ﺔﻴﻘﻠﺤﻠا ﺔذﺒاﻨﻠا

Dermatopathology. Dr. Rafael Botella Estrada. Hospital La Fe de Valencia

Cutaneous Sarcoidosis Misdiagnosed as Leprosy. Report of Two Cases and Review of Literature

Granulomatous dermatitis. Philip E. LeBoit, M.D. Depts. of Pathology and Dermatology University of California, San Francisco

PHYSIOLOGY AND MANAGEMENT OF HISTIOCYTIC DISEASE. Brant Ward, MD, PhD Division of Rheumatology, Allergy, and Immunology

Atlas of the Vasculitic Syndromes

A. Erythema multiforme and related diseases

Clinicopathologic Evaluation of Nodular Cutaneous Lesions of Behçet Syndrome

Granulomatosis and Polyangiitis Presenting as Superficial Granulomatous Pyoderma

Erythema gyratumrepens-like eruption in a patient with epidermolysisbullosaacquisita associated with ulcerative colitis

Degos Disease: A Case Report and Review of Literature

Diploma Examination. Dermatopathology: First paper. Tuesday 20 March Candidates must answer FOUR questions. Time allowed: 3 hours

Department of Dermatology, Christian Medical College and Hospital, Ludhiana, Punjab, India.

Original Article Comparison of cutaneous sarcoidosis with systemic sarcoidosis: a retrospective analysis

Clinicopathologic Self- Assessment S003 AAD 2017

Case Report Pulmonary Sarcoidosis following Etanercept Treatment

Sudden Appearance of Indurated Erythematous Plaques on a Man's Face

Dermclinic

A 40-year old male with follicular papule and pustule at central face area for 3 months

Sarcoidosis Case. Robert P. Baughman Interstitial Lung Disease and Sarcoidosis Clinic University of Cincinnati, USA. WASOG: educational material

Clinical and Pathological Features of Generalized Granuloma Annulare with Their Correlation: A Retrospective Multicenter Study in Korea

Title: Erythema annulare centrifugum associated with chronic lymphocytic leukaemia. Authors: Helbling I, Walewska R, Dyer MJS, Bamford M, Harman KE

Pyoderma Gangrenosum Associated with Ulcerative Colitis

Necrobiotic xanthogranuloma: a report of two fascinating cases

A case of rosacea fulminans in a pregnant woman

المركب النموذج--- سبيتز وحمة = Type Spitz's Nevus, Compound SPITZ NEVUS 1 / 7

CHAPTER 22 Brocq s alopecia (pseudopelade of Brocq) and burnt out scarring alopecia

Pulmonary Sarcoidosis - Radiological Evaluation

Cutaneous Sarcoid-Like Granulomas in a Child Known with Nijmegen Breakage Syndrome

HEMORRHAGIC BULLOUS HENOCH- SCHONLEIN PURPURA: A CASE REPORT

Plan. Sarcoidosis 21/07/2017. Sarcoidosis Liver involvement. Sarcoidosis GI involvement. Sarcoidosis Diagnosis

Diploma examination. Dermatopathology: First paper. Tuesday 21 March Candidates must answer FOUR questions ONLY. Time allowed: Three hours

Bilateral multiple choroidal granulomas and systemic vasculitis as presenting features of tuberculosis in an immunocompetent patient

Arthritis and Rosai-Dorfman Disease of the Skin: A Diagnostic Dilemma

Cutanous Manifestation of Lupus Erythematosus. Presented By: Dr. Naif S. Al Shahrani Salman Bin Abdaziz university

UC Davis Dermatology Online Journal

Dapsone Hypersensitivity Syndrome That Occurred during Treatment of Pediatric Patient with Erythema Elevatum Diutinum

Management of Pyoderma Gangrenosum Mentoring in IBD XVII

Lymphomatoid Papulosis 3 Case Reports

A middle-aged man with self-healing papulonecrotic lesions over the trunk and proximal limbs

THE NEUTROPHILIC DERMAtoses

Jeopardy. What s the rash? $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400

Journal of International Academy of Forensic Science & Pathology (JIAFP)

Sarcoidosis. Julia Rhiannon Harborview/UW Rheumatology November 2010

Case Presentation. Rafid Asfar, MD

Spectrum of clinical presentations

ANCA associated vasculitis in China

Interesting Case Series. Skin Grafting in Pyoderma Gangrenosum

SWISS SOCIETY OF NEONATOLOGY. A newborn with a papulonodular rash at birth

Misdiagnosed Case of Lepromatous Leprosy

Late-onset and Rare Far-advanced Pulmonary Involvement in Patients with Sarcoidosis in Taiwan

Mucinoses Diverse group of disorders which have in common deposition of basophilic, finely granular and stringy material in the connective tissues of

Case year old Chinese female. Radiological echo-distortion in the right breast at o clock. Core biopsy of the o clock lesion.

CUTANEOUS SARCOIDOSIS AS AN EXPRESSION OF SYPHILIS*

Morphea-A Case Report

الفتوي الاصفر الحبيبوم = Xanthogranuloma_Juvenile JUVENILE XANTHOGRANULOMA 1 / 9

Grover s disease: A case report.

A case of bullous pemphigoid following pemphigus foliaceus

Mycobacterial Ocular Inflammation. Akbar Shakoor, M.D. John A. Moran Eye Center, University of Utah

IMACS FORM 07b: MYOSITIS DISEASE ACTIVITY ASSESSMENT TOOL, Version

COPYRIGHTED MATERIAL. Introduction CHAPTER 1. Introduction

Microscopic study of the normal skin in cases of mycosis fungoides

Cardiac Sarcoidosis. Millee Singh DO Non Invasive Cardiology First Coast Heart and Vascluar

Sarcoidosis and Uveitis

SESSION 1: GENERAL (BASIC) PATHOLOGY CONCEPTS Thursday, October 16, :30am - 11:30am FACULTY COPY

RHEUMATOLOGY OVERVIEW. Carmelita J. Colbert, MD Assistant Professor of Medicine Division of Rheumatology Loyola University Medical Center

Transcription:

2013;21(4):245-249 CASE REPORT Palisaded Neutrophilic and Granulomatous Dermatitis in Association with Subcutaneous Nodular and Systemic Sarcoidosis Zrinjka Paštar 1, Jaka Radoš 2, Ivan Pavić 3, Suzana Kovačević 4, Anamarija Vukasović 5, Višnja Milavec-Puretić 2, Jasna Lipozenčić 2 1 Ministry of Defense; 2 Department of Dermatology and Venereology, University Hospital Center Zagreb and University of Zagreb School of Medicine; 3 Zagreb Children s Hospital, Zagreb; 4 Department of Ophthalmology, Zadar General Hospital, Zadar; 5 Department of Nuclear Medicine, Dubrava University Hospital, Zagreb, Croatia Corresponding author: Zrinjka Paštar, MD, PhD Ministry of Defense Av. Gojka Šuška 6 HR-10000 Zagreb Croatia zpastar@hi.htnet.hr Received: March 13, 2012 Accepted: November 10, 2013 SUMMARY Palisaded neutrophilic granulomatous dermatitis (PNGD) is a rare entity that has been clearly defined neither clinically nor histopathologically. PNGD has been associated with some immune-mediated disorders such as rheumatoid arthritis, systemic lupus erythematosus, systemic vasculitis, Behçet s disease, as well as with lymphoproliferative conditions, bacterial endocarditis, sarcoidosis, and various drugs. We present a 44-year-old Caucasian woman with roundish erythematous-livid plaque and erythematous papules on the left calf that were present for three months. Histopathology of plaque lesion showed palisading neutrophilic and granulomatous dermatitis. Subsequently, she developed a firm and tender nodule on the right calf. Histopathology of the nodule showed typical naked sarcoid granulomas in the dermis and subcutis. Additionally, the patient developed non-tender subcutaneous nodules on the cheeks, submandibular region and left breast with normal overlying skin, which were histopathologically diagnosed as sarcoid granuloma. Red eyes and lower visual acuity on the right eye were diagnosed as anterior uveitis. Therefore, systemic sarcoidosis was established. This is a case of PNGD described in an adult patient with sarcoidosis with cutaneous, breast, eye and lung involvement established by clinical, radiographic, laboratory, and histopathologic criteria. Key words: palisaded neutrophilic granulomatous dermatitis, sarcoidosis, systemic sarcoidosis INTRODUCTION Palisaded and neutrophilic granulomatous dermatitis (PNGD) is a rare inflammatory dermatosis (1). Synonyms are Churg Strauss granuloma, interstitial granulomatous dermatitis with arthritis, linear subcutaneous bands, rheumatoid papules, linear granuloma annulare, rheumatoid granuloma, superficial ulcerating rheumatoid necrobiosis, necrobiotic granuloma, palisading granuloma, and cutaneous extravascular necrotizing granuloma (2,3). PNGD is associated with immune-mediated disorders such as rheumatoid arthritis, systemic lupus erythematosus, systemic vasculitis, Behçet s disease, as well as with lymphoproliferative conditions, bacterial endocarditis, diabetes mellitus and coeliac disease, sarcoidosis, and drugs such as allopurinol (1-12). 245

We present the clinicopathologic findings in a 44- year-old Caucasian woman with a newly diagnosed systemic sarcoidosis, who presented with non-ulcerating plaque and papular lesion on the left calf. Based on the histopathologic findings, the patient was diagnosed with PNGD in association with systemic and subcutaneous sarcoidosis. CASE REPORT A 44-year-old Caucasian woman with no history of taking any drugs presented for evaluation of roundish erythematous-livid plaque and erythematous papule on the left calf that had been present for three months (Fig. 1). Therapy with topical corticosteroids did not lead to regression. Histopathology of the plaque lesion indicated PNGD (Fig. 2a,b). Subsequently she developed a firm and tender nodule on the right calf (Fig. 3). Histopathology of the nodule showed typical naked sarcoid granulomas in the dermis and subcutis (Fig. 4). Additionally, the patient developed non-tender subcutaneous nodules on the cheeks, submandibular region and left breast, with normal overlying skin. Mammography and ultrasonography showed a nodular lesion localized in the left breast. Biopsy microscopy of the breast and cheek revealed sarcoid granuloma. Additionally, the patient reported red eyes and lower visual acuity on the right eye. Ophthalmologic slit lamp examination revealed small granulomatous precipitation on the endothelia of the right eye cornea, diagnosed as anterior uveitis. Laboratory tests revealed normal calcium level in serum and urine, normal angiotensin converting enzyme and lysozyme, and normal x-ray of long bones. PPD test was hyperergic. Interferon-gamma release assay (performed by using QuantiFERRON-TB -Gold In tube test, Cellestis Ltd., Carnegie, Australia) was negative. Chest x-ray revealed bilateral hilar lymphadenopathy. Spirometry was normal. The test of diffusing capacity of the lungs for carbon monoxide revealed reduced diffusion capacity at the alveocapillary membrane level. Gallium-67 citrate scintigraphy of the whole body showed increased uptake in bilateral hilar region and in both breasts, more expressed in the right one (Fig. 4a,b). Therefore, the diagnosis of systemic sarcoidosis was established. Immune-mediated disorders, rheumatoid arthritis, systemic lupus erythematosus and systemic vasculitis were excluded. Oral therapy with 40 mg prednisone was administered for 4 weeks with dose tapered by 5 mg every seven days until the dose of 15 mg was reached and continued for the next 4 months. Incipient regression Figure 1. Roundish erythematous-livid plaque and two erythematous papules on the left calf. The plaque was biopsied. Figure 2. Histopathology of the plaque: palisaded neutrophilic and granulomatous dermatitis. Features of granuloma annulare-like lesions with the added features of vasculitis and no increased mucin (H&E; x40) (a); close-up view showing necrobiosis, histiocytes and neutrophils associated with karyorrhexis (H&E; x100) (b). 246

Figure 3. Firm and tender nodule on the right calf; clinically tender nodule. of the cutaneous lesions was seen during the fourth week of therapy and complete clinical cutaneous remission during the sixth week. Complete clinical cutaneous remission along with subcutaneous and systemic sarcoidosis and laboratory remission was seen after 4 months of therapy. DISCUSSION PNGD is a term that has been applied to a reaction pattern of necrobiotic and granulomatous inflammation encountered in the setting of systemic disease. Clinically, PNGD presents with asymptomatic, rarely tender, skin-colored to erythematous and violaceous papules, nodules, plaques and annular plaques with or without central ulceration and crusting on the extensor parts of extremities, medial thighs, trunk, and Figure 4. Histopathology of the nodule: numerous typical well formed, non-caseating granulomata of naked type consisting of epithelioid histiocytes and giant cells of both foreign body and Langerhan s type throughout the dermis, lobule and in fat septa (H&E; x100). Figure 5. Gallium-67 citrate scintigraphy of the whole body showing increased uptake in bilateral hilar region and in both breasts (a), more expressed in the right one (b). hands, sometimes linearly arranged (1-12). The clinical course of PNGD in most cases appears to be self-limited. Often, the appearance of these lesions coincides with worsening of the underlying systemic disease (10). The etiology and etiopathogenesis of PNGD are unknown. Almost all systemic diseases associated with PNGD include formation of immune complexes and therefore the immune mechanism probably plays a role. A variety of histologic patterns have been described. Histopathology of PNGD shows a spectrum of findings dependent on the duration of lesions: early lesions display leukocytoclastic vasculitis, dense neutrophilic infiltrate and degenerated collagen; later or fully developed lesions appear as palisaded granulomas with neutrophils, and eventually, dermal fibrosis can be seen; resolving lesions show palisaded granulomas with dermal fibrosis and scant neutrophilic debris (3,13). A common denominator is the presence of necrobiosis associated with histiocytic response similar to granuloma annulare or necrobiosis lipoidica. In fact, 247

some would label these lesions as falling within the spectrum of granuloma annulare (14). Superimposed on this background of granuloma annulare-like features is a neutrophilic infiltrate with karyorrhexis (14). The precise terminology preferred by dermatopathologists is probably not important. More significant than any nosologic nuances is issuing a report that alerts the clinician to the possibility that the patient may have underlying systemic disease and that when such lesions are encountered, appropriate clinical evaluation is necessary. In our adult female patient with asymptomatic, unilateral lesions on the extensor part of the knee based on the histopathologic findings and after thorough searching of literature, the diagnosis of PNGD in association with systemic and subcutaneous sarcoidosis was established. PNGD in association with sarcoidosis is rarely described. A review of the literature revealed one case of PNGD described so far in association with sarcoidosis in a pediatric patient and two in adult patients (1,4,15). The uniqueness of this case is the localization of sarcoidosis as subcutaneous lesions, which are rare findings, especially on the face (16). However, cutaneous sarcoidosis in childhood sarcoidosis can involve any region of the body but has a predilection for the face, especially the nostrils, nasolabial folds, and eyelids (15). Furthermore, breast involvement is extremely rare and it might be a pitfall in the diagnosis, as it may be confused with a neoplasm, as in our patient (17). Therefore, to exclude breast neoplasm in our patient, breast surgery and biopsy microscopy were necessary. Moreover, the eye can be the first site for presentation of sarcoidosis, as intermediate, posterior or anterior uveitis, as in our patient (18,19). Improvement of the PNGD has been reported with topical corticosteroids, low-dose prednisone, and dapsone, which is known to help in various neutrophilic dermatoses, although it is unclear whether such treatments caused resolution of the eruption or the lesions resolved spontaneously (5,10). Furthermore, treatment is focused on the underlying disorder and variable responses have been reported to cyclosporine, methotrexate, cyclophosphamide, colchicine, hydroxychloroquine, nonsteroidal inflammatory agents and infliximab, as these medications cause stabilization of the underlying disease (3,10,13). Treatment of cutaneous sarcoidosis can be frustrating because some of them may be refractory to treatment or may recur after treatment has been successfully finished (20). The most effective treatments for cutaneous sarcoidosis are corticosteroids (21,22). Topical or intralesional steroids are used for localized involvement, while for widespread involvement, severe lesions or those that impair function, systemic steroids are reserved. Nonsteroidal anti-inflammatory drugs, methotrexate, hydroxychloroquine, dapsone, allopurinol, minocycline, clofazamine and potassium iodide are reported for treatment with various responses (21,23-26). Our patient had complete response after 4 months of therapy with oral prednisone for PNGD and cutaneous and systemic sarcoidosis, with no relapse during the 4-year follow up. Furthermore, sarcoidosis may precede the development of a neoplastic process, mainly internal malignancy, by months or years (27-29). The pathogenic mechanism includes inflammation, intrinsic immune dysfunction, cytokines and interleukins, angiogenic factors, and epigenetic changes. Therefore, close patient follow up is necessary. In our patient, no neoplasm has been diagnosed in the 4-year follow up. CONCLUSION It is important that all patients with suggestive symptoms of PNGD are screened for associated autoimmune, lymphoproliferative, or malignant states. This case describes PNGD occurring in the adult patient with systemic and subcutaneous sarcoidosis, and with complete remission on systemic corticosteroid therapy. References 1. Mahmoodi M, Ahmad A, Bansal C, Cusack CA. Palisaded neutrophilic and granulomatous dermatitis in association with sarcoidosis. J Cutan Pathol 2011;38:365-8. 2. Finan MC, Winkelmann RK. The cutaneous extravascular necrotizing granuloma (Churg-Strauss granuloma) and systemic disease: a review of 27 cases. Medicine (Baltimore) 1983;62:142. 3. Sangueza OP, Caudell MD, Mengesha YM, Davis LS, Barnes CJ, Griffin JE, et al. Palisaded neutrophilic granulomatous dermatitis in rheumatoid arthritis. J Am Acad Dermatol 2002;47:251-7. 4. Gordon EA, Schmidt AN, Boyd AS. Palisaded neutrophilic and granulomatous dermatitis: a presenting sign of sarcoidosis? J Am Acad Dermatol 2011;65:664-5. 5. Bremner R, Simpson E, White CR, Morrison L, Deodhar A. Palisaded neutrophilic and granulomatous dermatitis: an unusual cutaneous manifestation of immune-mediated disorders. Semin Arthritis Rheum 2004;34:610-6. 6. Kim SK, Park CK, Park YW, Jun JB, Yoo DH, Bae SC. 248

Palisaded neutrophilic granulomatous dermatitis presenting as an unusual skin manifestation in a patient with Behçet s disease. Scand J Rheumatol 2005;34:324-7. 7. Germanas JP, Mehrabi D, Carder KR. Palisaded neutrophilic granulomatous dermatitis in a 12-year-old girl with systemic lupus erythematosus. J Am Acad Dermatol 2006;55:S60-2. 8. Asahina A, Fujita H, Fukunaga Y, Kenmochi Y, Ikenaka T, Mitomi H. Early lesion of palisaded neutrophilic granulomatous dermatitis in ulcerative colitis. Eur J Dermatol 2007;17:234-7. 9. Muscardin LM, Cota C, Amorosi B, Ferraro C. Erythema elevatum diutinum in the spectrum of palisaded neutrophilic granulomatous dermatitis: description of a case with rheumatoid arthritis. J Eur Acad Dermatol Venereol 2007;21:104-5. 10. Biswas A, Chittari K, Gey van Pittius D, Stephens M, Tan BB. Palisaded neutrophilic and granulomatous dermatitis in a child with type I diabetes mellitus and coeliac disease. Br J Dermatol 2008;159:488-9. 11. Misago N, Shinoda Y, Tago M, Narisawa Y. Palisaded neutrophilic granulomatous dermatitis with leukocytoclastic vasculitis in a patient without any underlying systemic disease detected to date. J Cutan Pathol 2010;37:1092-7. 12. Gordon K, Miteva M, Torchia D, Romanelli P. Allopurinol-induced palisaded neutrophilic and granulomatous dermatitis. Cutan Ocul Toxicol 2012;31:338-40. 13. Chu P, Connolly K, LeBoit PE. The histopathologic spectrum of palisaded neutrophilic and granulomatous dermatitis in patients with collagen vascular disease. Arch Dermatol 1994;130:1278. 14. Magro CM, Crowson AN, Regauer S. Granuloma annulare and necrobiosis lipoidica tissue reactions as a manifestation of systemic disease. Hum Pathol 1996;27:50-6. 15. Kwon EJ, Hivnor CM, Yan AC, Forbes B, Elenitsas R, Albert D, et al. Interstitial granulomatous lesions as part of the spectrum of presenting cutaneous signs in pediatric sarcoidosis. Pediatr Dermatol 2007;24:517-24. 16. English III JC, Patel PJ, Greer KE. Sarcoidosis. J Am Acad Dermatol 2001;44:725-43. 17. Fiorucci F, Conti V, Lucantoni G, Patrizi A, Fiorucci C, Giannunzio G, et al. Sarcoidosis of the breast: a rare case report and a review. Eur Rev Med Pharmacol Sci 2006;10:47-50. 18. Herbort CP, Rao NA, Mochizuki M; members of Scientific Committee of First International Workshop on Ocular Sarcoidosis. International criteria for the diagnosis of ocular sarcoidosis: results of the first International Workshop on Ocular Sarcoidosis (IWOS). Ocul Immunol Inflamm 2009;17:160-9. 19. Heiligenhaus A, Wefelmeyer D, Wefelmeyer E, Rösel M, Schrenk M. The eye as a common site for the early clinical manifestation of sarcoidosis. Ophthalmic Res 2010;46:9-12. 20. Marchell RM, Judson MA. Chronic cutaneous lesions of sarcoidosis. Clin Dermatol. 2007;25:295-302. 21. Tchernev G. Cutaneous sarcoidosis: the great imitator : etiopathogenesis, morphology, differential diagnosis, and clinical management. Am J Clin Dermatol 2006;7:375-82. 22. Tchernev G, Patterson JW, Nenoff P, Horn LC. Sarcoidosis of the skin a dermatological puzzle: important differential diagnostic aspects and guidelines for clinical and histopathological recognition. J Eur Acad Dermatol Venereol 2010;24:125-37. 23. Braverman IM. Sarcoidosis. In: Freedberg IM, Eisen AZ, Wolff K, Austen KF, Goldsmith LA, Katz SI, editors. Fitzpatrick s Dermatology in General Medicine. 6 th edn. New York (NY): McGraw Hill, 2003. pp.1777-83. 24. Ahmed I, Harshad S. Subcutaneous sarcoidosis: is it a specific subset of cutaneous sarcoidosis frequently associated with systemic disease? J Am Acad Dermatol 2006;54:55. 25. Voelter-Mahlknecht S, Benez A, Metzger S, Fierlbeck G. Treatment of subcutaneous sarcoidosis with allopurinol. Arch Dermatol 1999;135:1560. 26. Senet P, Cadranel J, Kaoukhov A, Dubertret L. The use of tetracyclines for the treatment of sarcoidosis. Arch Dermatol 2001;137:69. 27. Alexandrescu DT, Kauffman CL, Ichim TE, Riordan NH, Kabigting F, Dasanu CA. Cutaneous sarcoidosis and malignancy: an association between sarcoidosis with skin manifestations and systemic neoplasia. Dermatol Online J 2011;17:2. 28. Alexandrescu DT, Riordan NH, Ichim TE, Kauffman CL, Kabigting F, Dutton CT, et al. On the missing link between inflammation and cancer. Dermatol Online J 2011;17:10. 29. Tchernev G, Ananiev J, Cardoso JC, Wollina U, Verma SB, Patterson JW, et al. Sarcoidosis and molecular mimicry important etiopathogenetic aspects: current state and future directions. Wien Klin Wochenschr 2012;124:227-38. 249