目的 探讨肠系膜平滑肌瘤的诊断、治疗及预后特点。方法 结合文献分析一例肠系膜巨大平滑肌瘤患者的临床资 料。结果 肠系膜平滑肌瘤临床少见，临床表现及影像缺乏特异性，诊断困难，主要依靠病理组织学及免疫组化确 诊。结论 肠系膜平滑肌瘤易误诊漏诊，有恶变倾向，首选手术治疗，并需长期随访。

Objective To review the experience in the diagnosis and treatment of mesenteric leiomyoma and analyze the clinical characteristics. Methods A case of a giant mesenteric leiomyoma in a male was reported. The medical records were analyzed retrospectively and the literature was reviewed. Results A giant benign mesenteric leiomyoma is extremely rare. It is easy to misdiagnose for lack specific clinical manifestation. The diagnosis of leiomyoma depends on histological and immunohistochemical examinations. Conclusion Surgical treatment is the first choice for mesenteric leiomyoma. Close follow up is necessary because of its unpredictable biologic behavior.