Sparsely Granulated Corticotroph Pituitary Neuroendocrine Tumor

**Semantic type:** Neoplastic Process

**Definition:** A corticotroph pituitary neuroendocrine tumor composed of faintly basophilic or chromophobic PAS-positive cells with weak or patchy positivity for ACTH, consistent with the scant, small secretory granules seen ultrastructurally. (WHO)

**Synonyms:** - Sparsely Granulated Corticotroph PitNET/Adenoma - Sparsely Granulated Corticotroph Pituitary Neuroendocrine Tumor/Adenoma