Pituitary function before and after surgery for nonfunctioning pituitary adenomas - Data from the Swedish Pituitary Register.

ACTH deficiency increased significantly at one year postoperatively. Event though not significant, some patients recovered from or developed new deficiency between one and five years postoperatively. This pattern was seen in all axes. Our study emphasizes that continuous individual evaluations are needed during longer follow-up of patients operated for NFPA.