多层螺旋CT在胃肠道间质瘤临床诊断中的应用

目的:探讨多层螺旋CT对胃肠道间质瘤的诊断价值及临床应用.方法:回顾性分析12例经手术及病理证实的胃肠道间质瘤的CT表现特点.结果:肿瘤位于胃部4例;十二指肠3例;空肠3例;回肠2例.肿块直径<5.0 cm者4例;直径≥5.0 cm者8例.肿瘤呈圆形或椭圆形,密度均匀2例;密度不均匀8例;囊实性混合2例.增强扫描均匀强化2例;呈不均匀强化10例.术后病理证实为良性2例;交界性3例;恶性7例.结论:对胃肠道间质瘤行CT检查有助于准确定位,发现肿块,判断肿瘤性质.

Diagnostic value of multislice spiral computed tomography in gastrointestinal stromal tumor

Objective： To investigate the specific CT findings of gastrointestinal stromal tumors（GIST）by multislice helical CT（MSCT）. Methods： Aretrospective analysis of 12 cases of GIST confirmed by surgery and pathology was performed. The appearance of GIST was evaluated by MSCT. Results： There were 4 cases of GIST in the stomach, 5 cases in duodenum, 3 cases in the jejunum, 2 cases in the ileum. There were 4 patients with tumor diameter smaller than 5.0cm and 8 patients with the diameter equal or larger than 5.0cm. The lesions were round or oval in shape. The density was unifom in 2 cases not uniform in 8 cases and cystica and solid mixed in 2 cases. On enhanced CT scans, homogeneous enhancement was seen in 2 cases, homogeneous enhancement with spot-like necrosis in 10 cases. There were 2 benign neoplasms and 5 borderline pathoiogically neoplasms and 7 malignant neoplasms confirmed by post operative pathology. Conclusion： CT can detect and precisely localize GISTs, and it is helpful in differentiation of benign or malignant GISTs.