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Background  We report a case of a giant retroperitoneal calcifying fibrous tumor (CFT) treated by radical tumor resection combined with right hepatectomy and reconstruction of the inferior vena cava (IVC) and bilateral renal veins. Only three case reports of CFT arising in the retroperitoneum have been reported until today.    Case presentation  In a 19-year-old female patient, computed tomography (CT) images showed a well-demarcated expansile lesion around the IVC accompanied by focal calcification, whereas the IVC that was circumferentially surrounded by the lesion was dilated due to the desmoplastic reaction. On magnetic resonance imaging (MRI), the lesion demonstrated heterogeneous hypointensity on T2-weighted images. Delayed enhancement was observed on dynamic contrast-enhanced CT and MRI.  18 F-Fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT images showed increased FDG uptake [maximum standardized uptake values (SUVmax), early image 7.28; delayed image 7.40]. On operative examination, because the tumor adhered to the liver parenchyma, the right Glisson capsule, and the origin of bilateral renal veins, radical tumor resection combined with right hepatectomy and reconstruction of the IVC and bilateral renal veins was performed.    Conclusions  Radical tumor resection was successfully and appropriately performed for a young patient with a giant retroperitoneal CFT with a view to achieving complete venous reconstruction and safe surgical margins for a potentially malignant tumor.

surgical case reports

Radical resection of a giant retroperitoneal calcifying fibrous tumor combined with right hepatectomy and reconstruction of the inferior vena cava and bilateral renal veins