胃肠道间质瘤的影像诊断(附15例分析)  

X-ray diagnosis of gastrointestinal stromal tumor (a report of 15 cases analysis )

作　　者：许有生[1] 吴传芬 王建良[3] 沈纪林[1] 邬万新[4] 杨其根[1] 王立章[1] 余强[1] 王土兴[1] 吴金兴[1] 

机构地区：[1]嘉兴市第一医院放射科,浙江314000 [2]嘉兴市中医院放射科,浙江314000 [3]海盐县中医院放射科,浙江314300 [4]嘉兴市第一医院病理科,浙江314000

出　　处：《放射学实践》2003年第8期598-600,共3页Radiologic Practice

摘　　要：目的 :通过分析胃肠道间质病的X线征象以提高胃肠道间质瘤的影像诊断水平。方法 :搜集经手术病理证实的 15例胃肠道间质瘤病例资料 ,对其术前CT检查 ( 12例 )、常规X线造影 ( 3例 )、DSA检查 ( 1例 )进行回顾性分析。结果 :良性间质瘤单发 4例 ,多发 1例 (胃和小肠各有一个间质瘤 ) ,恶性间质瘤 10例 ,均为单发。恶性肿瘤一般较良性肿瘤大。CT密度均匀性 :良性肿瘤均匀 3个 ;恶性肿瘤均匀 3个 ,不均匀 7个。CT密度 :良性者与消化道壁相比密度相等 3个 ;恶性者等密度 3个 ,低密度 3个 ,等低密度 3个 ,等低高密度 1个。肿瘤灶边缘 :良性者 3个均无分叶 ,界限清楚 ;恶性者有分叶 5个 ,无分叶 5个。CT增强后强化 :良性者增强后强化均匀 ,恶性者增强后强化不均匀。结论 :胃肠道间质瘤的CT表现有一定的特征性 。Objective:To improve the X ray diagnosis of gastrointestinal stromal tumor (GIST).Methods:There were 15 cases of GIST which were diagnosed surgically and pathologically.In this group CT scan was performed in 12 cases, gastrointestinal barium exam (G.I) 3 cases and DSA 1 case.All of them were retrospectively analyzed.Results:There were 4 cases of single benign stromal tumor,1 case of multiple benign stromal tumor (in stomach and small intestine respectively), and 10 cases of single malignant stromal tumor.The size of the malignant lesions were somewhat larger than the benign ones.3 cases of benign tumor appeared homogenous;3 cases of malignant lesions presented homogeneous density and 7 cases heterogeneous.3 cases of benign tumors appeared isodense,compared with the wall of digestive tract.3 cases of malignant tumors appeared isodense,3 cases iso hypodense and 3 cases heterogenous hyperdense.The 3 cases of benign tumors appeared well defined and not lobulated.In the malignant tumors 5 cases were lobulated and 5 not lobulated.After contrast medium injection,there was homogenous enhancement in the benign tumors and inhomogenous enhancement in the malignant lesions.Conclusion:The CT manifestations of GIST show some characteristics which may play a role in the correct diagnosis.

关 键 词：胃肠道间质瘤 影像诊断 CT 恶性肿瘤 

分 类 号：R735[医药卫生—肿瘤]