在中枢神经系统肿瘤内直接注入无水乙醇，文献报道仅４例［１］。作者手术中将无水乙醇直接肉眼下注入中枢神经系统肿瘤实质内９例，可见肿瘤质地变软，术中出血减少，有利于肿瘤的完全切除。 资料和方法 手术显露肿瘤后，周围垫以棉片，然后用１ｍｌ结核菌素注射器，抽吸无水 Direct ethanol injection into the central nervous system tumors, the literature reported only 4 cases [1]. The authors injected ethanol into the central nervous system tumor parenchyma directly under the naked eye in 9 cases, showing that the texture of the tumor became soft and the intraoperative blood loss was reduced, which was conducive to complete resection of the tumor. Materials and Methods After the surgery reveals the tumor, the surrounding pad is covered with cotton pieces, and then with 1 ml tuberculin syringe, the water is drawn