胃肠间质瘤的超声影像学特点分析

Ultrasonographic features of gastrointestinal stromal tumors

目的分析胃肠间质瘤的彩色多普勒超声影像学特点。方法对我院2008年7月至2015年1月期间收治且经手术病理证实的胃肠间质瘤(51例)与胃肠癌(59例)患者的超声图像进行对比分析。结果胃间质瘤好发于胃底和胃体部(17例),肠间质瘤好发于小肠(24例)。胃癌好发于胃窦部(18例),肠癌好发于结、直肠(结肠癌20例,直肠癌12例)。与胃肠癌比较,胃肠间质瘤多以肿瘤不包绕肠腔为主、边界清晰、形态多较规整、内部回声多不均匀及周边淋巴结无转移(P<0.05),肿瘤大小和血流丰富程度比较差异无统计学意义(P>0.05),而单独将肠间质瘤的血流丰富程度与肠癌进行比较的结果发现二者的差异有统计学意义(P<0.05)。结论从本研究的初步研究结果来看,超声作为一种简便、快捷的检查方法,对于胃肠间质瘤与胃肠癌的鉴别具有一定的诊断价值。

Objective To analyze features of color Doppler ultrasonography in gastrointestinal stromal tumors. Method The ultrasound images of gastrointestinal stromal tumors （51 cases） and gastrointestinal cancers （59 cases） confirmed by operation and pathology were compared and analyzed. Results The gastric stromal tumor mainly occurred at the bottom of the stomach and the body of the stomach （17 cases）, the intestinal stromal tumor mainly occurred at the small intestine （24 cases）. The gastric cancer mainly occurred at the gastric antrum （18 cases）, the intestinal cancer all occurred at the colon （20 cases） and rectum （12 cases）. Compared with the gastrointestinal cancers, the gastrointestinal cavity was not surrounded by tumor, the peripheral boundary was clear, the morphology was more regular, the internal echo was uneven, and there was no peripheral lymph node metastasis in the gastrointestinal stromal tumors, the differences were statistically significant （P〈0.05）. There were no significant differences in the degree of blood flow and tumor diameter between the gastrointestinal stromal tumors and the gastrointestinal cancers （P〉0.05）, but the blood flow of the intestinal stromal tumor was significantly more abundant as compared with the intestinal cancer （P〈0.05）. Conclusion Color Doppler ultrasonography, as a simple and rapid method, has a certain diagnostic value for differentiation of gastrointestinal stromal tumors and gastrointestinal cancers.