SSTR5 and ACTH-producing pituitary gland adenoma: Regarding neoplastic tissues, SST5 was observed at a high intensity of expression in all somatotroph and in most of corticotroph adenomas, whereas in gonadotroph and nonfunctioning pituitary adenomas SST5 expression was low (Fig. 21) (Lupp et al., 2011; Gabalec et al., 2015; Lee et al., 2015).