Results: The five tumors included one epidermoid cyst, one ependymoma, one astrocytoma, one cavernous angioma, and one metastatic breast breast cancer.

• 结果：5例第四脑室肿瘤包括，1例表皮样囊种、1例室管膜瘤、1例星状细胞瘤、1例海绵状血管瘤、1例乳癌的脑转移。