AVP and Hyponatremia: Postoperative bleeding from the sphenopalatine artery in 1 patient. Pulmonary embolism in 1 patient of persistent Cushing’s disease after surgery. Postoperative CSF leak in 4 patients. Transient DI in 4 patients. Transient hyponatremia due to inappropriate ADH secretion or relative glucocorticoid deficiency in 10 patients. Infection in 3 patients.