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自１９９５年以来，我们共开展乙状窦后入路血管减压松解梳理术治疗三叉神经痛６４例。术中发现桥小脑角区域肿瘤１２例，术前均常规行桥小脑角横断层面ＣＴ扫描，其中仅１例术前ＣＴ诊断为占位病变，余１１例均报告无异常发现。本病术前漏诊率高，为提高术前诊断正确率，现将
Since 1995, we have performed a total of 64 cases of trigeminal neuralgia treated with posterior retrosigmoid decompression cardioverter carding. Intraoperatively, 12 cases of tumors in the cerebellopontine angle area were found. CT scan of the cerebellopontine angle was performed routinely before surgery. Only 1 case was suspected of occupying lesions by CT before operation, and no abnormality was found in the other 11 cases. The preoperative missed diagnosis rate is high, in order to improve the accuracy of preoperative diagnosis, now