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例1,男,35岁。9月前行双下肢纤维肉瘤切除术,入院前2月出现头痛、呕吐伴走路不稳,CT:左桥脑小脑角见5cm×4cm高密度区。术中见:肿瘤位于左侧小
Example 1, male, 35 years old. 9 months before the line of lower extremities fibrosarcoma resection, headache in February before admission, vomiting with walking instability, CT: left pontine cerebellum see 5cm × 4cm high-density area. See surgery: the tumor is located on the left small