胃肠道间质瘤128层螺旋CT诊断及危险度预测分析

摘要

Objective To investigate 128-slice spiral CT imaging features and biological risk assessment of gastrointestinal stromal tumors (gastrointestinal stromal tumors,GIST). Methods The clinical data and CT findings of 21 cases with GIST confirmed by pathology were analyzed retrospectively,which combined with literature analysis the relationship between CT imaging features and risk of tumor. Results Of 21 cases tumor,there were one with very low biological risk,2 with low risk,5 with moderate risk,13 with high risk.There were significant difference between biological risk of GIST and the size,shape,density,boundary and necrosis or hemorrhage,adjacent organ invasion or metastasis(P < 0.05).While there were no significant difference between biological risk of GIST and the enhancement,calcification of the tumor. Conclusion The CT findings of GIST has certain imaging characteristics. The CT imaging features can better reflect the pathological and histological character,which is helpful in biological risk assessment for GIST.%目的探讨胃肠道间质瘤的MSCT影像特征及生物学危险度评价。方法回顾性分析21例经手术病理证实的GIST临床资料及CT表现，结合文献分析与肿瘤危险度相关的MSCT征象。结果21例患者肿瘤极低危险度1例（4.8%），低危险度2例（9.5%），中等危险度5例（23.8%），高危险度13例（61.9%）。GIST的生特学危险度与肿瘤的大小、形态、密度、边界以及肿瘤坏死出血、邻近器官侵犯、转移有关，差异具有显著的统计学意义（P＜0.05）。而GIST的生特学危险度与肿瘤增强程度、钙化无显著统计学差异（P＞0.05）。结论 GIST的MSCT有一定的影像特征，CT征象能较好地反映GIST的病理组织学特点，有助于肿瘤生物学危险度的评价。