Surgical procedure for giant infantile retroperitoneal teratoma based on preoperative 3D-CT findings: Two case reports

Abstract

Herein, we report 2 infantile cases of giant retroperitoneal teratoma successfully resected on the basis of 3D-CT findings. Case 1 was a 3-month-old girl who had developed remarkable abdominal distension. Preoperative 3D-CT angiography revealed that the left renal vein was deviated and disrupted by tumor compression. Collateral vascularity via ovarian vein was expected, and minimal handling during dissection around the renal hilus enabled tumor resection while preserving the left kidney. Case 2 was a 4-month-old girl, and 3D-CT revealed that the inferior vena cava (IVC) and bilateral renal veins were disrupted with the development of collateral vascularity via vertebral venous plexus. Successful tumor resection was performed with the sacrifice of IVC and right renal vein. Both patients showed no renal dysfunction postoperatively. 3D-CT angiography is mandatory for preoperative evaluation, and a surgical procedure based on the evaluation of collateral circulation is crucial for the successful resection of such tumors.