以下为句子列表：
英文: In 10 cases a tumor specimen was obtained either by open surgery or stereotactic biopsy, securing the diagnosis of pilocytic astrocytoma in five patients and nonpilocytic astrocytoma in five others.
中文: 10例的肿瘤标本通过开放手术或立体定向的活检获得，得出的诊断是：5例毛细胞性星形细胞瘤，5例为非毛细胞性星形细胞瘤。
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