胃肠道间质瘤的MSCT诊断  

Multi-slice Spiral CT Diagnosis of Gastrointestinal Stromal Tumor

作　　者：侯勤明 李锡林[1] 张华[1] 

机构地区：[1]建德市第一人民医院放射科,浙江311600

出　　处：《放射学实践》2009年第5期502-505,共4页Radiologic Practice

摘　　要：目的:探讨胃肠道间质瘤的MSCT诊断价值。方法:回顾性分析经手术病理证实的28例GIST患者病例资料,均行术前CT平扫及双期增强扫描。结果:发生于胃16例,小肠8例,结肠3例,直肠1例。良性5例,交界性6例,恶性15例。CT定位诊断符合率92.9%(26/28)。17例病灶呈圆形或类圆形,10例呈不规则形,1例呈哑铃状。大多数病灶密度不均匀,肿瘤内部可发生出血、囊变、坏死,钙化及气体影,增强扫描病灶大多明显不均匀强化,静脉期进一步强化,部分恶性间质瘤可侵犯临近脏器。结论:GIST的CT征象具有一定的特征性,定位较准确,对肿块诊断及良恶性的鉴别诊断有一定的帮助。Objective： To investigate the value of multi-slice spiral CT （MSCT） in the diagnosis of gastrointestnal stromal tumor （GIST）. Methods： Retrospectively analyzed the clinical and imaging materials of 28 cases with GIST confirmed by surgery and pathology. Plain and two-phase dynamic enhanced MSCT were performed before surgery. Results：The location of GIST were stomach （16 cases）,small bowel （8 cases）,colon （3 cases） and rectum （1 case）,with benign GIST （5 cases） ,potentially malignant （6 cases） and malignant （15 cases）. Accuracy of CT diagnosis for localization was 92.9% （26/28 cases）. The shape of the lesions were round or oval （n=17） ,irregular （n=10） ,dumbbell like （1 case）. Most of the tumors were heterogeneous in density, with intra-tumoral cystic degeneration, haemorrhage, necrosis, calcification and gas. After contrast enhancement, most of the tumors showed obvious inhomogeneous enhancement during arterial phase, and further enhanced during venous phase. Part of the malignant GIST showed invasion of adjacent organs. Conclusion：Characteristic MSCT findings could be revealed in GIST, the tumor could be accurately localized and MSCT is helpful in the diagnosis and differential diagnosis for the benign and malignant tumors.

关 键 词：胃肠道 间质瘤 体层摄影术 X线计算机 诊断 鉴别 

分 类 号：R735[医药卫生—肿瘤]