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Washington University Experience | NEOPLASM (SELLAR) | Pituitary Adenoma - Pituitary Neuroendocrine Neoplasm | Corticotroph | 14B4 PA, CR in nl (Case 14) ACTH 4.jpg
ACTH stains cells in the non-neoplastic acini which show the change in neurosecretory granule distribution caused by Crooke’s hyaline change (ACTH IHC)