不同危险度分级胃肠道间质瘤MRI影像学特征及诊断价值

MRI Characteristics of Gastrointestinal Stromal Tumors with Different Risk Grades and their Diagnostic Value

目的 探讨不同危险度分级胃肠道间质瘤(GIST)MRI影像学特征及诊断价值。方法 对我院2018年4月至2921年4月62例GIST患者的临床资料进行回顾性分析,所有患者均接受MRI扫描,并以手术病理结果 为金标准,根据危险度将其分为低危险度组(n=19)、中危险度组(n=16)及高危险度组(n=27),分析不同危险度分级GIST患者MRI影像学特征及诊断价值。结果 不同危险度分级GIST患者MRI影像学特征与生长方式、转移、信号特点无关(P<0.05),与肿瘤直径、肿瘤部位、边界、肿瘤形态、囊变坏死、ADC值有关(P<0.05);MRI对GIST危险度分级诊断的总准确度为85.48%(53/62);MRI对低危险度、中危险度、高危险度诊断的准确率分别为78.95%(15/19)、81.25%(13/16)、9 2.59%(25/27)。结论 不同危险度分级GIST患者MRI影像学特征存在明显差异,可通过肿瘤直径、肿瘤部位、边界、肿瘤形态、囊变坏死、ADC值判断GIST危险度分级,MRI对不同危险度分级GIST具有较高的诊断价值。

Objective To explore MRI characteristics of gastrointestinal stromal tumors(GIST) with different risk grades and their diagnostic value.Methods A retrospective analysis was performed on the clinical data of 62 patients with GIST in the hospital between April 2018 and April 2021.All underwent MRI sca ns.Taking the results of su rgical pathology as the golden standard,they were divided into low-risk group(n=19),moderate-risk group(n=16) and high-risk group(n=27) according to risk grades.MRI characteristics in GIST patients with different risk grades and their diagnostic value were analyzed.Results MRI characteristics were not related to growth modes,metastasis or signal characteristics in GIST patients with different risk grades(P>0.05),while related to tumor diameter,tumor sites,border,tumor morphology,cyst necrosis and ADC values(P<0.05).The total accuracy rate of MRI in the diagnosis of GIST risk grades was 85.48%(53/62).The accuracy rates of M RI in the diagnosis of low-risk,moderate-risk and high-risk GIST were 78.95%(15/19) 81.25%(13/16) and 92.59%(25/27),respectively.Condusion There a re significa nt differences in MRI characteristics among GIST patients with different risk gra des.GIST risk gra d es can be determined by tumor diameter,tumor sites,border,tumor morphology,cyst necrosis and ADC values.MRI is of high diagnostic value for GIST with different risk grades.