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Washington University Experience | NEOPLASM (SELLAR) | TTF-1-positive sellar tumor - Pituicytoma | 1C2 Pituicytoma (Case 1) S100 1.jpg
There is strong immunoreactivity for S100. (S100 IHC) ---- Not shown: The tumor cells are negative for EMA, progesterone receptor and synaptophysin. The Ki-67 proliferation index is overall low to focally moderate.
