关键词: 岩斜区, 枕下乙状窦后入路, 脑膜瘤

Abstract: ［Abstract］ Objective To discuss the role of suboccipital retrosigmoid approach in surgical treatment of cerebellopontine angle （CPA） meningiomas. Methods We reviewed the cases with the CPA meningiomas in our hospital from January 2004 to December 2015. A total of 53 patients underwent microsurgery through suboccipital retrosigmoid approach for CAP meningiomas and their clinical data were analyzed retrospectively including surgical approaches，efficacy and complications. Results In these 53 cases，tumor was completely resected in 48, subtotal removed in the other 5. All patients were followed up for 30 months to 8 years after the operation，in whom the preoperative symptom and sign disappeared in 32 patients，relieved in 7. The cranial nerve deficit was unchanged in 3 and new neurological deficit was present in 11. Conclusion Suboccipital retrosigmoid approach is a classic approach for the CPA lesions. It offers an excellent exposure to CPA region.

Key words: meningioma, retrosigmoid approach, cerebellopontine angle