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Washington University Experience | NEOPLASM (SELLAR) | Pituitary Adenoma - Pituitary Neuroendocrine Neoplasm | Somatotroph | 5C1 PA (Case 5) CAM5.2 5
5C1-3 The cytokeratin CAM 5.2 shows ball-like cytoplasmic staining in a majority of the tumor cells, consistent with fibrous bodies (rounded aggregates of keratin in growth hormone producing cells).