CT imaging features of fat-poor primary retroperitoneal liposarcoma

VernacularTitle:少脂肪成分的原发性腹膜后脂肪肉瘤的CT特征
Author: Xuan ZHANG ¹ ; Yujie LI ; Mengmeng XIAO ; Chenghua LUO ; Xia SUN ; Yong GUO
Author Information

1. 北京大学国际医院放射科，北京　102206
Keywords: Liposarcoma; Retroperitoneal neoplasms; Tomography, X-ray computed
From: Chinese Journal of General Surgery 2024;39(7):554-557
CountryChina
Language:Chinese
Abstract: 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.