Thursday, December 1, 2016

Pineal Parenchymal Tumor of Intermediate Differentiation, WHO grade III


"A tumor of the pineal gland that is intermediate in malignancy between pineocytoma and pineoblastoma and is composed of diffuse sheets or large lobules of monomorphic round cells that appear more differentiated than those observed in pineoblastoma." -- WHO Book (2016)

The particular example depicted above recurred with leptomeningeal spread.

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