Subtotal resection of facial nerve schwannoma is not safe in the long run

Conclusions: Subtotal resection of facial nerve schwannoma (FNS) could obtain favorable facial nerve function recovery, but has a high recurrence rate in the long run. Subtotal resection with about 95% tumor resected could be considered in the elderly with good facial nerve function, but is not recommended for younger patients. Subtotal resection with about 70-80% tumor resected should be replaced by complete tumor removal and nerve grafting. Objectives: To present long-term follow-up results of subtotal resection of FNS and discuss the indications for subtotal resection. Methods: We performed subtotal resection of FNS in 15 cases and they were followed up for 7 years on average. Results: In all, 93.3% of cases finally gained normal or near-normal facial nerve function (House-Brackmann (HB) grade I or II) and one case maintained grade III. Tumor recurrence or regrowth was noted in four cases (26.7%) during follow-up. Recurrence was observed in 10% of cases who had about 95% tumor resected and in 60% of cases who had 70-80% tumor resected.