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Washington University Experience | NEOPLASM (SELLAR) | Pituitary Adenoma - Pituitary Neuroendocrine Neoplasm | Somatotroph | 4C1 PA, sparse granulation (Case 4) CK 1.jpg
4C1-3 These spherical perinuclear cytoplasmic inclusions are positive for pan-cytokeratin, consistent with "fibrous bodies."