胃肠道间质瘤彩色多普勒超声诊断及临床分析

目的探讨胃肠道间质瘤（GIST）彩色多普勒超声表现及其在诊断中的应用价值。方法回顾性分析2008年1月-2010年7月75例经病理证实的GIST的彩色多普勒超声声像图表现,将其与手术病理结果进行对比分析。结果 GIST患者中男性高危险度肿瘤的比例较女性高（χ^2=7.210,P〈0.01）。肿瘤的大小、内部回声与其病理危险度高低有关：危险度低者、肿瘤最大径〈5cm,内部回声较均匀;危险度高者,肿瘤最大径≥5cm,内部回声不均匀。肿瘤的彩色血流分布与其危险度高低无明显相关。常规的超声检查对肿瘤检出率较高,在胃及直肠的GIST诊断准确率高于其他部位的GIST。结论彩色多普勒超声检查有助于GIST的定位及分化程度的判断,可作为首选检查方法。

Color Sonography Diagnosis and Clinical Analysis of Gastrointestinal Stromal Tumor

Objective To investigate the value of ultrasonography in the diagnosis of gastrointestinal stromal tumors（GIST）.Methods The color sonographic performances obtained in 75patients with pathologically proved GIST from January 2008to July 2010were retrospectively analyzed.The sonographic findings were compared with pathological results.Results The proportion of high-risk cancer in male patients with GIST was higher than that in women（χ^2=7.210,P0.01）.The tumor size and internal echo level were related to its pathologic risk：in low-risk GIST,maximum tumor diameter was5cm,and internal echo was more homogeneous;in high-risk GIST,maximum tumor diameter was≥5cm and internal echo was heterogeneous.There was no statistical difference between tumor blood flow distribution and GIST risk.Routine sonography examination had a higher rate of cancer detection and had a higher accuracy in the diagnosis of GIST in the stomach and rectum than those in the other parts.Conclusion Sonography helps to locate and diagnose malignant GIST,which is a common and preferred screening method.