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一般资料 男１６例，女１９例。年龄１３～５９岁，平均４２．５岁。病程３个月～２０年，平均２８个月。以面部麻木为首发症状的有３１例，占８９％。其次为复视、小脑症状。 肿瘤直径小于 ４ｃｍ ６例；４～６ｃｍ例；大于６ｃｍ ８例。最大的 １例为 １２ｃｍ。根据肿瘤生长
General information of 16 males and 19 females. Aged 13 to 59 years old, average 42.5 years old. Duration of 3 months to 20 years, an average of 28 months. There are 31 cases with facial numbness as the first symptom, accounting for 89%. Followed by diplopia, cerebellar symptoms. Tumor diameter less than 4cm 6 cases; 4 ~ 6cm cases; more than 6cm 8 cases. The largest one case of 12cm. According to tumor growth