Objective To investigate the CT imaging features of fat-poor primary retroperitoneal liposarcoma(PRPLS).Methods The CT signs of 43 fat-poor PRPLS cases among 128 PRPLS patients confirmed by pathology,including multiple nodules composing or multiple nodules fusing,tumor heterogeneity,were retrospectively evaluated.Results Of 43 fat-poor PRPLS cases,28 cases(65％)showed multiple nodules composing or multiple nodules fusing on CT images,15 cases(35％)demonstrated single mass.Seventeen cases showed tumor heterogeneity on pre-contrast scan,18 cases showed tumor heterogeneity on contrast scan,13 cases showed tumor heterogeneity on both pre-contrast and contrast scan,22 cases(51％)showed tumor heterogeneity on pre-contrast or contrast scan.Conclusion CT signs of multiple nodules composing or multiple nodules fusing,especially tumor heterogeneity may help establishing diagnosis of fat-poor PRPLS.
维普
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