The acoustic nerve was preserved anatomically in 4 cases ( 16.7 % ) and functionally in 2 cases ( 8.3 % ).
听神经解剖保留4例 ( 16.7% ),功能保留2例 ( 8.3% ).
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Results Eighteen cases were astrocytoma, 2 cases meningioma, 2 cases oligodendrocytoma and 1 case was acoustic nerve tumor.
结果星形细胞瘤18例, 脑膜瘤2例, 少突胶质细胞瘤2例,听神经瘤1例.
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MRI showed abnormal signs in the distal part of the acoustic nerve in 3 patients.
MRI显示 脑干内病灶11例,3例(517%)可观察到听神经颅骨内段条索状长T1长T2异常信号,听神经肿胀.
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