18 F-FDG PET/CT of renal Ewing's sarcoma in children:one case report
REN Jiazhong
WANG Xiaohui
FU Zheng
Abstract：Ewing sarcoma is a common malignant tumor in orthopedics,but its occurrence in the kidney is rare.This article re-ported a case of pediatric renal Ewing's sarcoma that underwent 18F-FDG PET/CT examination.The imaging showed a large,soli-tary,irregular soft tissue mass in the kidney,with ill-defined borders from the renal parenchyma and a diffuse,infiltrative growth pattern.Necrotic and cystic changes,as well as calcification,were observed within the mass,which exhibited heterogeneous in-creased radiotracer uptake.Renal Ewing's sarcoma is prone to developing tumor thrombi in the renal vein and/or inferior vena cava,which also presents with high 18F-FDG uptake.Postoperative pathological examination confirms the diagnosis of left renal Ewing's sarcoma.18F-FDG PET/CT can accurately demonstrate the size,morphology,distribution and density of lesions,as well as the ex-tent of invasion and metastasis,which is conducive to guiding tumor staging and the formulation of clinical treatment plans.
Keywords：Renal Ewing's sarcomaPositron-emission tomographyChildren
Publication Date：2026-01-30
Online Publishing Date：2026-03-20(First online date of this platform, not the publication date of the document)
Pages：2( 180-181 )