Fig. 1From: Clinical study of endoscopic treatment of a sellar pituitary adenomas with sellar diaphragm defecta Schematic diagram of the shape of a normal pituitary crypt. The red arrow identifies an intact saddle, and there is no defect. b Schematic diagram of a pituitary crypt caused by a congenital defect of the saddle diaphragm, with the saddle diaphragm is already missingBack to article page