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Washington University Experience | NEOPLASMS (PINEAL) | PPTID (Pineal Parenchymal Tumor Intermediate Differentiation) | 7C PPTID (Case 7) Ki67 40X 1
Ki67 immunostain shows a low proliferation index, but the amount of tissue is too limited for quantification ---- Not shown: The tumor cells are negative for GFAP, CD45, cytokeratin, and melan-A. ---- The findings are those of a primary pineal parenchymal tumor of intermediate differentiation.
