64排螺旋CT对胃肠道间质瘤的诊断价值

value of 64-Slice Spiral CT in Diagnosis of Gastrointestinal Stromal Tumors

目的探讨胃肠道间质瘤的64排螺旋CT表现及诊断价值。方法回顾性分析我院2009年8月～2012年8月间经手术病理证实的21例胃肠道间质瘤患者的64排螺旋CT检查资料，观察病变的部位、大小、形态、边界以及增强扫描后肿瘤的强化特点。结果21例患者中，位于胃部13例、小肠4例、结肠3例、肠系膜1例。其中，恶性12例，直径〉5cm，边缘分叶、密度不均、瘤体中心液化（坏死），增强扫描后不均匀强化、延迟扫描强化更明显；良性7例，直径〈5cm，类圆形、边界清晰、密度均匀、增强后均匀强化；交界性2例，瘤体密度多较均匀。结论64排螺旋CT平扫及增强扫描对胃肠道间质瘤的定位及定性诊断有较高的价值。

Objective To investigate the expression and value of 64-slice spiral CT in diagnosis of gastrointestinal stromal tumors（GIST）. Methods CT data of 21 cases with GIST confirmed through surgery and pathology from August 2009 to August 2012 in our hospital are retrospectively analyzed. The site, size, shape, boundary, and tumor enhancement features of the lesions after enhanced scan are observed. Results Of 21 patients, 13 are located in stomach, 4 cases in small intestine, 3 cases in colon, 1 case in mesentery and 12 cases are malignant with diameter 〉 5cm, divided leaves in the edge, uneven density, liquefaction necrosis in the center of the tumor, inhomogeneous enhancement after enhanced scan, more obvious enhancement after delayed scan. 7 eases are benign with diameter 〈5cm, quasi-circular, clear boundary, uniform density, and homogeneously enhanced after enhancement scan. Tumor volume density are found much more uniform in two borderline eases. Conclusion It is of great significance to apply 64-row spiral CT scan and enhanced scan in diagnosis of the location and nature of gastrointestinal stromal tumors.