以下为句子列表：
英文: Neoplasm in the fourth ventricle was resected. [Results] Among the 20 cases total resection was in 14 and subtotal resection was in 6. [Conclusion] The cerebello-medullary fissure opproach can provide a panoramic view between the two laterl recesses.
中文: 方法对20例第Ⅳ脑室内肿瘤均采取枕下正中开颅，经扁桃体下小脑延髓裂入路，显微镜下切除第Ⅳ脑室内肿瘤。
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