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European Radiology
Erschienen in: European Radiology 5/2021

30.10.2020 | Gastrointestinal

Preoperative CT feature of incomplete overlying enhancing mucosa as a high-risk predictor in gastrointestinal stromal tumors of the stomach

verfasst von: Gang Peng, Bingcang Huang, Xiaodan Yang, Maohua Pang, Na Li

Erschienen in: European Radiology | Ausgabe 5/2021

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Abstract

Objectives

To determine whether the CT finding of overlying enhancing gastric mucosa (OEGM) can be used to predict risk stratifications by observing CT features of gastrointestinal stromal tumors (GISTs) of the stomach.

Methods

Clinical characteristics and CT features within pathologically demonstrated GISTs were retrospectively reviewed. Risk stratifications were classified into non-high group and high-risk group according to the modified National Institutes of Health criteria. Univariate analysis and multivariate logistic regression analysis were performed in order to determine significant predictors for high-risk stratification. Receiver operating characteristic (ROC) curve analysis, subgroup analysis, and pathologic-radiologic correlation analysis were all executed.

Results

A total of 147 patients were finally enrolled as test subjects. Within the univariate analysis, high-risk tumors tended to have a larger diameter, irregular shape, exophytic growth pattern, present necrosis, incomplete OEGM, tumor vessels, heterogeneous enhancement, and present rupture. According to ROC curve analysis, incomplete OEGM showed the largest area under curve values for diagnosing lesions (0.835; 95% CI, 0.766–0.904; p < 0.001). Multivariate analysis showed that the incomplete OEGM was the strongest independent predictor for high-risk stratification of gastric GISTs (OR = 21.944; 95% CI, 4.344–110.863; p < 0.001). Within the subgroup analysis, incomplete OEGM was more frequently associated with tumors size > 10 cm, irregular shape, exophytic growth pattern, high mitotic count, and disrupted mucosa on pathology.

Conclusions

The CT feature of incomplete OEGM is an independent predictive factor for high-risk stratification of gastric GISTs and strongly correlated with pathological mucosal changes.

Key Points

• Preoperative CT features can be helpful in assessment of risk stratifications of gastric GISTs.
• OEGM is an independent predictor for high-risk stratification of gastric GISTs.
• Incomplete OEGM likely indicates high-risk stratification of gastric GISTs.
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Metadaten
Titel
Preoperative CT feature of incomplete overlying enhancing mucosa as a high-risk predictor in gastrointestinal stromal tumors of the stomach
verfasst von
Gang Peng
Bingcang Huang
Xiaodan Yang
Maohua Pang
Na Li
Publikationsdatum
30.10.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
European Radiology / Ausgabe 5/2021
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-020-07377-5

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