label: Sparsely Granulated Corticotroph Pituitary Neuroendocrine Tumor
label_lc: sparsely granulated corticotroph pituitary neuroendocrine tumor
description: "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)"