脊索瘤较少见 ,治疗以手术或手术加放疗为主 ,但易复发 ,5年生存率 75%～ 83% ,1 0年生存率42 %～ 50 % [1] 。我科于 1 975年 5月～ 1 992年 5月收治 4例 ,报道如下。1　材料和方法本组 4例均为男性 ,年龄 37～ 71岁 ,中位年龄41岁。肿瘤位于鞍区 2例 ,骶骨 1例 ,第 5腰椎 (L5 Chordoma is rare, the treatment of surgery or surgery plus radiotherapy-based, but easy to relapse, 5-year survival rate of 75% to 83%, 10-year survival rate of 42% to 50% [1]. My department in May 1975 to May 1992 to treat 4 cases, reported as follows. 1 Materials and Methods The group of 4 patients were male, aged 37 to 71 years, the median age of 41 years. The tumor was located in the saddle in 2 cases, sacrum in 1 case, the 5th lumbar (L5