Value of multislice CT applied in the non-invasive assessment of the risk of gastrointestinal stromal tumors
Objective:To analyze the multislice CT(MSCT)imaging presentation of gastrointestinal stro-mal tumors(GISTs)and to explore the relationship between different imaging features and their bio-logical risk.Methods:A retrospective analysis was performed on 82 patients who were clinically diag-nosed with GISTs between February 2017 and January 2022,in Xiaogan First People's Hospital,and 70 patients of them had complete spiral CT plain scan and multi-phase enhancement scan data.CT im-aging features of all the patients were analyzed,including the site of the tumor,maximum diameter,growth pattern,shape,border,degree of enhancement,enhancement pattern,presence of hemor-rhagic necrosis,presence of calcification,and metastases.The patients were classified into very low risk,low risk,intermediate risk,and high risk according to their pathological risk level.Results:All 70 pathologically confirmed patients had a single lesion,with 41(58.6％),18(25.7％),7(10％),2(2.85％),and 2(2.85％)lesions in the stomach,small intestine,colorectum,mesentery,and omen-tum,respectively;the pathological risk classification showed that 6,35,20 and 9 patients were at very low,low,medium and high risk,respectively.The localization of GISTs by MSCT was in good agreement with the pathological findings.The MSCT imaging manifestations of GISTs had di-verse features.Statistically significant differences were found in the risk level of GISTs in terms of tu-mor location,maximum diameter,morphology,mode of enhancement,presence of haemorrhagic ne-crosis,calcification and metastasis(P＜0.05).However,there were no statistically significant differences in tumor growth pattern,border,and degree of enhancement(P＞0.05).Conclusion:There are some differences in the MSCT imaging performance of gastrointestinal mesenchymal tu-mors with different risk levels,especially the signs of tumor location,maximum diameter,morpholo-gy,and enhancement pattern with high value in the non-invasive assessment of the biological risk of GISTs before treatment.
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