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16层螺旋CT对直肠间质瘤的影像诊断 被引量:5

Diagnosis of rectal interstitialoma by 16-slices spiral CT
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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。 Objective To investigate 16-slicesspiml CT manifestationsanddiagnoSis in rectal interstitialom. Methods 16-slices spiral CT finding of 17 cases withrectal interstifialoma by surgically and pathologically confirmed were analyzed All cases performed noncontrast and contrast-enhanced CT images with Siemens sensation 16-sliceSspiral CT.Results CT showedaintrapelvic mass of tectal 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 CTvalue 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.
出处 《中国CT和MRI杂志》 2009年第1期35-37,共3页 Chinese Journal of CT and MRI
关键词 直肠 间质瘤 螺旋CT rectum interstitialoma spiral CT
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