NEURORADIOLOGY-NEUROPATHOLOGY CONFERENCE
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1 THE UNIVERSITY OF NORTH CAROLINA at CHAPEL HILL SEPTEMBER 2013 NEURORADIOLOGY-NEUROPATHOLOGY CONFERENCE Claudia da Costa Leite, MD, PhD Thomas Bouldin, MD
2 CASE 1 6 y-o female with headaches and vomiting for 2 months. Headaches are worse in the morning. Spinal MRI: no evidence of enhancement.
3 T2 ADC Non contrast CT FLAIR DWI
4 Post Gd T1
5 Medulloblastoma
6 Medulloblastoma Most common malignant brain tumor in children. Peak of incidence 3-4 and 8-9 yo; 2M: 1 F % occur in the midline % present subarachnoid seeding. High cellular: hyperdense on CT and hyperintense on DWI with reduced ADC. Calcifications (20%) and/or necrosis (50%) can be seen. Contrast enhancement is usually present. Poretti A. et al Journal of Magnetic Resonance imaging 2012; 35: 32
7 CASE 2 75 y-o male with septic shock and delirium, Previous hystory of SCC in the left external year 11 years ago that reccur; patient received radiation treatment. SCC in the right ear 4 years ago, SCC in a vocal cord followed by a SCC in the left lateral tongue 3 years ago and SCC in the left post-auricular region 1 year ago. Chest x-ray Diffuse infiltrate diagnosed as parainfluenza 3 pneumonia.
8
9 Case 2-Continuation Clinical condition worsened: persistent delirium, respiratory and renal insufficiency, anasarca and the patient had a cardiopulmonary arrest. Autopsy has been request.
10 Intravascular large B cell lymphoma of brain
11
12
13 Intravascular large B cell lymphoma IVBCL is categorized as a subtype of diffuse large B-cell lymphoma. A rare disease incidence less than one per one million. Age range from years, with a median of 70 years. Any organ can be involved, with brain and skin commonly involved. Intravascular growth but peripheral blood involved in under 10% of patients. Brain involvement usually manifests as subacute encephalopathy, dementia, seizures, or multifocal cerebrovascular events. Common brain MR findings are multiple cortical or subcortical T2 hyperintensities but study may be normal as in our patient. Initial diagnoses considered are usually stroke, encephalomyelitis, Guillain-Barré syndrome, vasculitis, and multiple sclerosis, and it is not uncommon that the diagnosis of IVL is not established until autopsy. Gan LP, et al.surg Neurol Int. 2013; 4: 99. Raza M, et al. J Clin Oncol 30:e144, 2012.
14 CASE 3 50 y-o female with left cranial nerve III palsy.
15
16
17
18 Hemangioma
19 Hemangioma Extra-axial hemangioma has quite different clinical and imaging characteristics from intra-axial cavernous hemangioma. Located at cavernous sinus or cerebellopontine angle. Usually misdiagnosed as meningioma. Prominent hyperintensity on T2-weighted images. Enhancement from the periphery to central portion on post-contrast images. As dense vascular lesion presents a high bleeding surgical risk making pre-operative diagnosis quite important. Hasilogly ZI et al. 2013: 37: 744
20 CASE 4 28 y-o male with back strain who developed radicular pain radiating to his left leg with a L3-L4 dermatomal distribution. Only non contrast (outside) MRI study is available.
21
22 Myxopapillary ependymoma
23 Myxopapilary ependymoma Grade I (WHO) tumor. More common in adults than in children. Occurs almost exclusively at the conus/cauda equina. Relapse incidence is high. Usually are centrally located, tend to be wellmarginated, and can present hemorrhage. There usually is contrast enhancement. Wald JT. Radiol Clin North Am 2012; 50: 749
24 Case 5 22 y-o female, headaches 2 months ago, followed by nausea, and vomiting. One month ago suffered loss of vision in both eyes without light perception.
25 Case 5-Continuation Chest and abdomen CT are normal. Patient had a brain craniotomy.
26
27 Hemangioblastoma
28 Hemangioblastoma Benign tumor. Can occur anywhere in the CNS, mainly cerebellum, medulla, spinal cord, and retina. Median age of presentation: 40 years. Sporadic or associated with Von Hipple Lindau disease, when they are usually multiple. Most common imaging presentation: cystic lesion with a solid mural nodule. Hussein 2007; 88: 311
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