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The natural history of surgically treated but radiotherapy‐naïve nonfunctioning pituitary adenomas

Background and objectives  Transsphenoidal surgery is indicated for patients with nonfunctioning pituitary adenomas (NFPAs) causing compressive symptoms. Previous studies attempting to define the rate of recurrence/regrowth of surgically treated but radiation‐naïve NFPAs were somewhat limited by selection bias and/or small numbers and/or lack of consistency of findings between studies. A better understanding of the natural history of this condition could allow stratification of recurrence risk and inform future management. We aimed to define the natural history of a large, mainly unselected cohort with surgically treated, radiotherapy (RT)‐naïve NFPAs and to try to identify predictors of recurrence/regrowth.