Contralateral Transcranial Approach to Tuberculum Sellae Meningiomas: Long-Term Visual Outcomes and Recurrence Rates

Background One of the most challenging aspects of the surgical treatment of tuberculum sellae meningioma is to control the involvement of the inferomedial side of the optic nerve, which is not directly visualized by an ipsilateral approach and thus requires optic nerve mobilization. Methods Between 2003 and 2017, 21 consecutive patients were operated on using this approach. The surgical technique is described and the visual outcomes, resection and recurrence rates, and complications are analyzed. Results Twenty patients were included, with a median follow-up of 5.6 years. Regarding visual outcomes, among the 19 patients who had a visual impairment before surgery, 14 (74%) improved, 2 were stabilized (10%), and 2 (10%) showed a worsening of the most-compromised optic nerve and 1 (5%) of the less-compromised optic nerve. Gross total resection was achieved in 18 patients (90%) and 1 patient experienced recurrence 10 years after the initial surgery. Conclusions This approach allowed lower mobilization of the compromised optic nerve, better preservation of the vascularization of the visual pathways, and direct access to the inferomedial side of the optic nerve.