Idiopathic Transverse Myelitis Mimicking an Intramedullary Spinal Cord Tumor

Figure 3

(a) Representative H&E section of lesional tissue (200x). There are perivascular and parenchymal infiltrates of lymphocytes. The blood vessel wall shows hyalinization changes and there is congestion in the capillaries. (b) Glial fibrillary acidic protein (GFAP) immunostains show focal gliosis (200x). (c) A few CD20 positive B cells are present (200x). (d) A few CD3 positive T cells are present (200x). (e) Neurofilament immunostain highlights axons (200x). (f) Luxol fast blue- (LFB-) periodic acid-Schiff (PAS) stains show intact myelin (200x). There is no evidence of glioma, lymphoma, demyelinating disease, granuloma, viral-cytopathic changes, fungal organisms, or mycobacterial organisms.