MSCT对GST诊断及临床治疗指导价值初探

目的:分析多层螺旋CT（MSCT）对胃间质瘤（GST）诊断及临床治疗指导价值。方法:收集本院2018年1月至2019年2月收治的56例胃间质瘤患者的临床资料，收集患者临床资料对患者进行病理危险度评估，分析不同病理危险度患者的MSCT图像表现差异，计算MSCT对GST的诊断准确率。结果:56例患者中病理危险度极低者11例（19.64%），危险度低者18例（32.14%），中危险度者14例（25.00%），高危险度者13例（23.21%）。MSCT平扫密度、瘤内有无坏死/溃疡、动静脉其强化程度差值、瘤内及瘤周有无血管与病理危险度比较差异无统计学意义（P>0.05）；瘤周脂肪间隙、强化方式与病理危险度比较有明显差异（P<0.05）；以病理活检为对照，MSCT对GST的诊断准确例数为53例，诊断准确率为94.64%，其中3例误诊为胃癌，误诊率为5.45%。结论:MSCT对GST诊断准确率高，可有效显示不同病理危险度GST图像表现特点，为临床手术提供可靠影像学信息。 

Guidance Value of MSCT in the Diagnosis and Clinical Treatment of GST

Objective:To analyze the guidance value of multi-slice spiral computed tomography (MSCT) in the diagnosis and clinical treatment of gastric stromal tumor (GST). Method:The clinical data of 56 patients with gastric stromal tumor admitted to our hospital from January 2018 to February 2019 were collected. The clinical data of patients were collected to evaluate the pathological risk of patients. The differences in MSCT images between patients with different pathological risks were analyzed, and the diagnostic accuracy of MSCT for GST was calculated. Results:Among the 56 patients, 11 patients (19.64%) had very low pathological risk, 18 patients (32.14%) had low risk, 14 patients (25.00%) had moderate risk, and 13 patients (23.21%) had high risk. There was no significant difference in the density of MSCT, the presence or absence of necrosis/ulcer in the tumor, the difference value of degree of of arteriovenous enhancement, the presence or absence of the intravascular and peritumoral vessels, and the pathological risk (P>0.05). There was a significant difference in peritumoral fat space, enhancement mode and pathological risk (P<0.05). Taking pathological biopsy as a control, the number of accurate diagnosis of GST by MSCT was 53 cases, and the diagnostic accuracy was 94.64%. Three cases were misdiagnosed as gastric cancer, and the misdiagnosis rate was 5.45%. Conclusion:MSCT has a high diagnostic accuracy for GST, which can effectively display the characteristics of GST images with different pathological risks, and can provide reliable imaging information for clinical operations.