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通过3例直肠平滑肌肉瘤的临床诊治分析及文献复习，作者对其发病机理、诊断、手术方法及预后作一阐述。
Through the analysis of clinical diagnosis and treatment of 3 cases of rectal leiomyosarcoma and literature review, the author describes the pathogenesis, diagnosis, surgical methods and prognosis.