分析25年来经治的第三脑室肿瘤72例中死亡的47例的原因。手术死亡率为19.7％。住院期的病死率为31.9％,38例有病理资料,计星形细胞瘤13例,颅咽管瘤8例,室管膜瘤及畸胎瘤各6例,松果体瘤及髓母细胞瘤各2例,少枝胶质瘤1例。分析认为与死亡有关的因素为:①肿瘤的性质;②病期的早晚;③诊断的贻误;④手术失当。 Analyze the causes of 47 deaths in 72 of the third-ventricle tumors treated in 25 years. Surgical mortality was 19.7%. In-hospital mortality was 31.9%. Thirty-eight patients had pathological data, including 13 astrocytomas, 8 craniopharyngiomas, 6 ependymomas and teratomas, 3 pineal tumors and medullary cells 2 cases of tumor, 1 case of less glioma. Analysis of the factors associated with death as follows: ① the nature of the tumor; ② period of disease sooner or later; ③ diagnosis of the delay; ④ surgical errors.