摘要
目的:探讨十二指肠间质瘤的CT表现特征。材料和方法:回顾性分析经手术和病理证实的17例十二指肠间质瘤患者的CT影像学资料。结果:肿瘤位于十二指肠降部7例,水平部5例,升部5例。17例中恶性9例,伴转移2例,低度恶性6例,良性2例。17例中腔外生长14例,腔内外生长3例,肿块最大径3～20cm,其中≥5cm者16例,<5cm者1例。肿物密度不均匀伴中心坏死13例,伴破溃5例,分叶状10例,增强动脉期周边强化15例,16例肿块边缘可见尖角征。结论:十二指肠间质瘤具有相对特征性的CT表现:腔外生长不均质肿块、动脉期周边强化、尖角征。掌握这些CT表现有利于提高诊断准确性。
Purpose： To investigate the specific CT findings of gastrointestinal stromal tumors of duodenum. Materials and Methods： The CT imaging of 17 cases of gastrointestinal stromal tumors of duodenum comfirmed operatively and pathologically were reviewed and analyzed. Results：Of the 17 cases, 7 lesions were located in descending part, 5 in horizontal part, 5 in ascending part. 9 of the 17 cases were malignant in which 2 with metastasis of adjacent structures, 6 of them were potentially malignant, 2 of them were benign. Of the 17 cases, 14 grew outward cavity and 3 in - out cavity： The max diameter of mass was between 3- 20cm, only 1 was less than 5cm and 16 of them were over 5cm. 13 of the tumors were cystic - solid with inhomogenous attenuation. Ulcer was seen in the tumors of 5 cases. 10 cases had a lobulated contour. 15 cases showed a circumjacent enhancement pattern on the arterial phase. The cuspidal horn sign was seen in 16 cases. Conclusion： Gastrointestinal stromal tumors of duodenum has comparatively specific CT findings： an inhomogenous mass that grew outward cavity, a circumjacent enhancement pattern on the arterial phase, the cuspidal horn sign. To master these CT findings can raise the accurate rate of CT diagnosis.
出处
《中国医学计算机成像杂志》
CSCD
2008年第5期425-428,共4页
Chinese Computed Medical Imaging
