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Washington University Experience | NEOPLASMS (HEMATOLYMPHOID) | Lymphoma, primary | 7C3 Lymphoma (Case 7) H&E whole mount

7C3-5 The callosal lesion consists of sheets of large, dyscohesive tumor cells with mildly pleomorphic, irregular nuclei, vesiculated chromatin, one or more prominent nucleoli, and scant eosinophilic cytoplasm. Intermixed with these tumor cells at variable density are reactive lymphocytes and foamy macrophages. At greater distances from the involved vessels, the atypical tumor cells are less abundant. A similar histological pattern is present in the cerebellum

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