Primary Isolated Lymphoma of the Fourth Ventricle in an Immunocompetent Patient

Figure 4

Hematoxylin and Eosin stain showing neoplastic growth formed of highly pleomorphic cells with hyperchromasia, irregular nuclear membranes, vesicular nucleus, and prominent nucleoli. Aggregations of mature lymphocytes also seen, with areas of hemorrhagic necrosis apoptosis and calcification seen.