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Washington University Experience | NEOPLASM (SELLAR) | Pituitary Adenoma - Pituitary Neuroendocrine Neoplasm | Plurihormonal | 10C3 PA, ACTH (Case 10) PRL 4

Large areas of prolactin labeled elements consist of large swaths of small sheets of cells and expanded acini. ---- Comment: The overall findings are those of a pituitary adenoma that is immunophenotypically corticotrophic but has a component of prolactin that has not functionally declared itself. Is the prolactin area tumor or adenomatous hyperplasia? We thought tumor.

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