【摘要】 目的探讨直肠间质瘤在16层螺旋CT影像上的表现和诊断。方法回顾性分析17例经手术病理证实的直肠间质瘤的16层螺旋CT表现。使用Siemens sensation 16层螺旋CT检查,17例均行平扫和增强。结果(1)盆腔内直肠壁或直肠周围软组织肿块,大小不等,肿块与直肠壁关系密切;(2)直肠不同程度的受压、变窄,肿块主要向直肠腔外生长,对周围组织产生推挤压迫;(3)径线在5cm以下肿瘤平扫时密度稍低,但均匀,增强时表现为中等度均匀强化,无坏死;径线在5cm以上10例肿块密度平扫时呈稍低密度且不均匀,CT值25-35Hu,增强时较大的肿瘤边缘带中等度结节样强化,CT值50-60Hu,肿块中心部分无强化,呈坏死样改变。结论直肠间质瘤在16层螺旋CT影像上有一定影像特征,可帮助术前定位、定性和分级。更多还原

【Abstract】 Objective To investigate 16-slices spiral CT manifestations and diagnosis in rectal interstitialom.Methods 16-slices spiral CT finding of 17 cases with rectal interstitialoma by surgically and pathologically confirmed were analyzed retrospectively.All cases performed noncontrast and contrast-enhanced CT images with Siemens sensation 16-slices spiral CT.Results CT showed a intrapelvic mass of rectal wall or surrounding soft tissue with inequality of size,relation closeness with intestinal wall;rectall wall different degree compression and narrowing,and extruding surrounding tissue.Below 5cm tumor density were slightly reduced,but symmetrical.Exceed 5cm tumor moderately enhanced,but asymmetrical.CT value of major mass were 25-35Hu,with boundary zone nodule enhancement,contrast-enhanced CT value 50-60Hu,and centricity necrosis.Conclusion Rectum interstitialoma has some features in 16-slices spiral CT imaging,which is helpful for preoperative localization,qualitation and classification.更多还原