Characteristics and Differential Value of Multi-phase CT Scanning for Gastric Stromal Tumor and Gastric Schwannoma with Diameter≤5cm
Objective To analyze the characteristics and differential value of multi-phase computed tomography(CT)for gastric stromal tumor(GIST)and gastric schwannoma(GS)with diameter≤5cm.Methods A total of 60 patients with suspected GIST or GS with diameter≤5cm who underwent multi-phase CT scanning were retrospectively analyzed.Taking the surgical and pathological results as the gold standard,the accuracy,sensitivity and specificity of multi-phase CT scanning in discrimi-nating GIST and GS with diameter≤5cm were analyzed.The scanning characteristicsof CT images(lesion location,tumor mor-phology,growth mode,density,boundary,tissue necrosis,tissue calcification,tissue ulcer)were analyzed and compared by radi-ologists.Results The accuracy,sensitivity,specificity,positive predictive value,negative predictive value and Kappa value of GIST and GS with diameter≤5cm were 95.00%(57/60),98.11%(52/53),71.43%(5/7),96.30%(52/54),83.33%(5/6)and 0.741 respectively.Among the characteristics of multi-phase CT scanning,there were significant differences in tumor morphology and border between GIST and GS with diameter≤5cm(P＜0.05).There were no significant differences in lesion location,growth pattern,density,boundary,tissue necrosis,tissue calcification and tissue ulcer(P＞0.05).Conclusions When GIST and GS with diameter≤5cm are examined and differentiated by multi-phase CT scanning,there are obvious differences in tumor morpholo-gy and boundary scan characteristics between them,which has certain differential diagnostic value and provides reference ba-sis for clinical differential diagnosis.
diameter≤5cmGISTGSmulti-phase CT scanningdifferential value
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