Endocrine Abstracts

Introduction: AVP secretion disturbances in pituitary lesions usuall, present as AVP deficienc, due to compression of the posterior pituitary lobe. Excessive secretion of AVP (syndrome of inappropriate antidiuresis) (SIAD) is ver, uncommon in patients with pituitary tumor. A few cases of non-functionating adenoma, prolactinoma, and even pituitary apoplex, were described to present with SIAD. Pituicytoma is a rare tumor of the neurohypophysis. The, usuall, present with visual d...