Value of CT features in differentiating gastric leiomyomas and gastric stromal tumors based on propensity score matching
10.3969/j.issn.1002-1671.2024.05.014
- VernacularTitle:CT特征对鉴别基于倾向性得分匹配的胃平滑肌瘤和胃间质瘤的价值
- Author:
Lijia WANG
1
;
Xiaohui QI
;
Jiangyang PAN
;
Qiao XIE
;
Li YANG
;
Qi WANG
Author Information
1. 河北医科大学第四医院CT&MRI科,河北 石家庄 050011
- Keywords:
gastric stromal tumors;
gastric leiomyomas;
computed tomography;
propensity score matching
- From:
Journal of Practical Radiology
2024;40(5):741-745
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the CT features and differential value of gastric leiomyomas(GLs)and gastric stromal tumors(GSTs)after propensity score matching.Methods Twenty-six GLs were 1∶1 propensity score matched to GSTs based on sex,age,tumor site and size.Tumor shape and contour,mucosal ulcer,tumor growth patterns,enhancement pattern and degree,the lon-gest diameter(LD)of the tumor,and the ratio of the LD to the vertical diameter(VD)were analyzed.CT signs included hemor-rhage,calcification,peripheral invasion,and distant metastasis,etc.Regression analysis was used to determine the best quantitative evaluation for differentiation of them.Results The presence of mucosal ulcer was significantly more frequent in GSTs than in GLs(P=0.032).Both tumors showed progressive enhancement;however,the enhancement degree of GSTs was significantly higher than GLs in the arterial and portal venous phases(P=0.004,P=0.002,respectively).The above influential factors were included in a regression analysis using enhancement degree of 18 HU and 23 HU in the arterial and portal venous phases as cutoff values respectively.An enhancement degree≤18 HU in the arterial phase was identified as an independent influential factor in the diagnosis of GLs[odds ratio(OR)=12.776,95％confidence interval(CI)1.270-128.535].No significant difference was found in other morphological characteristics(P＞0.05).Conclusion Less ulceration on the tumor surface and mild enhancement in arterial phase are characteristic features of GLs compared with GSTs.
