晚发性放射性脑坏死,在范围相对比较局限,又伴有颅内压增高时,其临床表现可类似脑瘤。脑电图、脑造影以及C.T.都会难以鉴别。这种疑似脑瘤的放射性脑坏死,国内外文献报导不多,且病例比较个别。我院神经外科自1977年1月至1983年4月,对6例疑似脑瘤的放射性脑坏死进行了手术治疗,并经病理切片检查证实。现报告并讨论如下: 例一、男,39岁。住院号13150。1973年10月因鼻咽癌在双侧耳前和颈部进行深部X线治疗。放疗后一般情况良好。1976年12月(放疗后3年2个月),逐渐出现头痛、呕吐、并进行性加重。1977年1月复查无鼻咽部癌肿复发。3月10日入院检查:神志清醒,双侧眼球外展不完全,左侧鼻唇沟较浅,左上肢肌力4级,双侧视乳头水肿。脑电图两侧中 Late onset radioactive brain necrosis, relatively limited scope, but also associated with increased intracranial pressure, its clinical manifestations may be similar to brain tumors. EEG, brain imaging and C.T. will be difficult to identify. This suspected brain tumor of radioactive brain necrosis, domestic and foreign literature reported small, and the cases are relatively individual. Neurosurgery in our hospital from January 1977 to April 1983, 6 cases of suspected brain tumors of radiation brain necrosis were surgically treated and confirmed by biopsy. Now report and discuss as follows: Example 1, male, 39 years old. Hospital number 13150. October 1973 due to nasopharyngeal carcinoma in both ears before and neck deep X-ray treatment. Generally good after radiotherapy. December 1976 (3 years and 2 months after radiotherapy), gradual headache, vomiting, and progressive increase. January 1977 review of nasopharyngeal cancer recurrence. March 10 admission examination: conscious, bilateral eyeball outreach is not complete, the left nasolabial fold shallow, left upper limb muscle strength 4, bilateral papilledema. EEG on both sides