Long-term follow-up of a large prospective cohort of patients with nonfunctioning pituitary adenomas: The outcome of a conservative management policy.

Objective: To assess the clinical outcome of a strategy of conservative monitoring of patients with nonfunctioning pituitary adenomas (NFPA) after pituitary surgery and in patients without surgery.

Design: Retrospective study of outcomes, using a clinical information system.

Patients: An unselected, clinical series of patients seen in a single centre between 1989 and 2015.