螺旋CT对腹部平滑肌肉瘤的诊断价值

Diagnosis value of spiral CT in ieiomyosarcoma of abdomen

目的 探讨螺旋CT在腹部平滑肌肉瘤诊断中的价值.方法 回顾性分析12例腹部平滑肌肉瘤患者的CT表现,术前CT定位为1例直肠,2例结肠,1例小肠,4例系膜,4例腹膜后.结果 所有病例均经手术病理证实为平滑肌肉瘤,12例中1例肿瘤位于直肠,1例位于结肠,1例位于小肠,5例位于结肠系膜,4例位于腹膜后,CT定位准确率为91.7％（11/12）.肿瘤一般体积较大,平均直径为6 cm,密度不均匀,中心常出现结节状及斑片状坏死,但无钙化及囊性变,增强后实性部分可以出现延时强化（9/12）.结论 螺旋CT对腹部平滑肌肉瘤诊断的定位较为准确,CT平扫及增强扫描图像有一定特征,但最后诊断依靠病理免疫组织化学.

Objective To evaluate the diagnosis value of spiral CT in leiomyosarcoma of abdomen.Methods Both plain and enhanced CT fingdings in 12 cases with pathologic-proved leiomyosarcoma of abdomen were respectively analyzed.Results In all of 12 cases,1 case occurred in colon,1 case in rectum,1 case in small intestine,5 cases in mesentery,4 cases in retroperitoneum,CT positioning accuracy rate was 91.7 % （11/12）.The volume was comparatively large,the average diameter was 6 cm.The density were uneven,nodosity or lamellar necrosis were found.Delay enhacement were occurred in lower density part in most part of cases （9/12）.Conclusion The localization of spiral CT is comparatively accurate to the leiomyosarcoma of abdomen,some characteristics are found in CT image,but the final diagnosis depends on immunohistochemistry.