报道５０例经脑ＣＴ扫描证实的老年慢性硬脑膜下血肿（ＣＳＨ）。３２例有不同程度外伤史（占６４％），但高颅压症状轻微。１７例（３４％）初诊时接近诊断；１９例（３８％）初诊为脑血管病；另１４例（２８％）误为其它，手术治疗４０例效果良好；非手术治疗１０例中基本治愈６例，死亡４例获尸检诊断。结合文献报道讨论了外伤与血肿形成、脑ＣＴ检查和治疗等有关问题。总结出５条体会 Report of 50 cases of chronic subdural hematoma (CSH) confirmed by brain CT scan. 32 cases had different degrees of history of trauma (64%), but mild symptoms of high intracranial pressure. Seventeen (34%) were diagnosed at first visit; 19 (38%) were initially diagnosed as having cerebrovascular disease; the other 14 (28%) were misdiagnosed as others. Surgical treatment was effective in 40 cases; non-surgical treatment was basically cured in 10 cases Cases, 4 patients died of autopsy diagnosis. Combined with the literature discussed the formation of trauma and hematoma, brain CT examination and treatment and other related issues. Summed up five experiences