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目的：探讨颅内肿瘤开颅术后非手术区颅内血肿的形成机制．方法：报告１７例经 ＣＴ证实的颅内肿瘤开颅术后非手术区颅内血肿。结合文献阐述其发生机理．结果：血肿发生在脑内１３例，硬膜下 ２例，硬膜外２例；发生时间：２４小时内９例，２５小时～７２小时５例，７２小时以上３例；结论：脑血管自主调节功能障碍、，颅内压骤减、操作性脑挫裂伤、血流动力学改变以及高血压、凝血机制障碍等局部或全身因素是术后颅内血肿形成的主要原因，术后严密监护、适时复查ＣＴ，及时确诊并治疗是改善其预后的关键．
Objective: To explore the mechanism of intracranial hematoma in non-operative area after intracranial tumor craniotomy. Methods: Reported 17 cases of intracranial hematoma in non-operative area after craniotomy in 17 cases of intracranial tumors confirmed by CT. Combined with the literature to explain its mechanism. Results: Hematoma occurred in 13 cases in the brain, 2 cases in the subdural and 2 cases in the epidural. Occurrence time: 9 cases in 24 hours, 5 cases in 25 hours to 72 hours and 3 cases in more than 72 hours. Conclusion: Cerebrovascular autonomic Regulatory dysfunction, sudden decrease in intracranial pressure, operative cerebral contusion, hemodynamic changes and hypertension or coagulation disorders and other factors, local or systemic intracranial hematoma after surgery is the main reason for postoperative intensive care , Timely review of CT, timely diagnosis and treatment is to improve the prognosis of the key.