目的探讨CT在腹部平滑肌肉瘤诊断中的作用。方法分析9例经手术病理证实的腹部平滑肌肉瘤的CT表现。结果9例平滑肌肉瘤发生于腹膜3例,胃3例,直肠、结肠及子宫各1例。肿瘤密度不均,中心有大片坏死,周围实质呈破絮状或环状,其中1例可见液平面。增强后为延迟边缘强化。结论CT检查对平滑肌肉瘤可做出较准确的诊断。 Objective To investigate the role of CT in the diagnosis of abdominal leiomyosarcoma. Methods The CT findings of 9 cases of pathologically confirmed abdominal leiomyosarcoma were analyzed. Results 9 cases of leiomyosarcoma occurred in 3 cases of peritoneum, stomach in 3 cases, rectum, colon and uterus in 1 case. Uneven tumor density, the center of large necrosis, was substantially around the broken floc or ring, of which 1 case of visible fluid level. Enhanced to delay edge enhancement. Conclusion CT examination can make a more accurate diagnosis of leiomyosarcoma.