The expanded endoscopic endonasal approach for suprasellar meningiomas: long-term outcomes in a single-center series of 27 patients
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BACKGROUND: The endoscopic endonasal approach (EEA) has become increasingly employed in the treatment of suprasellar meningiomas. These tumors often cause visual symptoms due to compression of the anterior visual pathway. We aimed to examine long-term visual outcomes after EEA for optic nerve decompression and resection of suprasellar meningioma at our center, and to identify preoperative factors predictive of postoperative visual improvement. METHODS: We performed a retrospective cohort study on 27 patients who underwent the EEA for resection of meningiomas extending into the suprasellar cistern and decompression of anterior visual pathway between January 1, 2005, and March 1, 2019. RESULTS: We treated 8 male and 19 female patients, with a mean follow-up of 7.6 years. The mean age of our patients at initial presentation was 60.1 years. Eighteen patients (66.7%) presented with visual acuity deficits, and 12 (44.4%) patients presented with visual field deficits. Postoperatively, 11 patients had improved visual acuity, 6 had stable visual acuity, and 1 patient had slow and progressive decline of visual acuity; 5 patients had improved visual field, 6 had stable visual field, and 1 patient had slow and progressive decline in visual field. Patients less likely to have postoperative improvement of visual acuity were those with longer than 6-month duration of visual symptoms (P = 0.024*) as well as patients with the presence of a relative afferent pupillary defect (RAPD) (P = 0.023*). CONCLUSION: The EEA can achieve good visual outcomes in patients harboring suprasellar meningiomas. Symptom duration of less than 6 months and lack of a RAPD were positive predictors of postoperative visual acuity.
