“…Transsphenoidal surgery (TS) is the first choice of treatment for CD. Although being a safe treatment, with a reported 30-day mortality in experienced hands of less than 1%, surgical cure is not achieved in all patients [1,2,3]. The reported initial success rate for pituitary surgery for CD varies between 60 and 86%, however the true rate tends to be lower since up to 25% of patients suffer from recurrence after apparent remission [4,5,6,7,8,9,10,11,12].…”