小脳橋角部腫瘍の概要

Overview of Cerebellopontine Angle Tumors

Point

・小脳橋角部腫瘍の手術では厳重な術中モニタリングを要し，良好な成績を得るためには専門性が要求される．

・頭蓋底アプローチのマスターや深部での剝離操作が必要とされ，入門時に専門施設での研修を受けることが望ましい．

　Cerebellopontine angle tumors are rare, and surgeries for these tumors are challenging. Vestibular schwannomas, which account for 70-80% of cerebellopontine angle tumors, are managed by surgery, stereotactic radiosurgery or radiotherapy, and watchful observation. Surgery for vestibular schwannoma aims for maximal tumor resection while preserving facial and/or hearing function through strict intraoperative neuromonitoring. Surgical outcomes have markedly improved since the centralization of vestibular schwannoma surgery through the Internet and mass media.

　This chapter outlines the surgical approaches for cerebellopontine angle tumors, including vestibular schwannomas, meningiomas, epidermoid cysts, trigeminal schwannomas, jugular foramen schwannomas, facial nerve schwannomas, hypoglossal schwannomas, and glomus jugulare tumors.