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Washington University Experience | NEOPLASMS (GLIAL) | Oligodendroglioma - IDH1 mutant, del 1p19q - Grade 3 | 13A0 Oligodendroglioma, Gr3 (Case 13) H&E Smear 1

Case 13 History ---- The patient is a 72 year old man was difficult to arouse after sleep and was found to have a mass on a CT at an outside hospital. MRI shows a large (7.1 cm) right frontal lobe mass with patchy areas of enhancement and is T2 hyperintense. There is local mass effect and subfalcine herniation. Operative procedure: Frontal craniotomy and tumor resection. ---- 13A0 The network of thin vessels are seen and, focally, in this intraoperative smear in particular, there is endothelial hyperplasia

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