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P.091 Surgical outcomes for patients undergoing repeat endoscopic endonasal trans-sphenoidal surgery for recurrent pituitary adenomas

  • E Toyota (a1), J Wang (a2), N Pirouzmand (a2), N Ijad (a2), M Ali (a2), F Nassiri (a2) and G Zadeh (a2)...

Abstract

Background: Endoscopic endonasal trans-sphenoidal surgery (EETS) is a commonly used approach for the surgical treatment of primary pituitary adenomas. The role of this approach in patients with recurrent disease remains unclear. Here we review a high-volume institutional experience with repeat EETS for recurrent pituitary adenomas and compare outcomes against primary surgeries. Methods: A retrospective chart review of patients who underwent EETS at Toronto Western Hospital from 2008-2016 for pituitary adenomas was completed. Baseline patient characteristics and surgical outcomes were recorded for each surgery. Primary and repeat operations were compared for analysis using Fisher’s exact test and t-test where appropriate. Results: 347 primary and 48 repeat surgery patients were identified. The median follow-up was 3.6 years (range 0-10.6 years). Rates of GTR, optic decompression, endocrinopathy cure, and visual improvement in repeat EETS were 44%, 21%, 22%, and 21%, respectively. While these rates are lower when compared to primary surgeries (75% p<0.001, 58% p<0.001, 75% p=0.01, 37% and p=0.04), they demonstrate that desirable outcomes are still achievable after EETS for recurrent disease. Conclusions: These results from a quaternary-care centre suggest that repeat EETS is a viable option that is safe and effective at improving the visual and endocrine status in select patients with recurrent pituitary disease.

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