There are pelviabdominal bilateral retroperitoneal prominent serpiginous structures of low density suggestive of retroperitoneal lymphangiectasia. Associated mild dilatation of the cisterna chyli and thoracic duct is also noted.
Left-sided inferior vena cava terminates at the level of the left renal vein and crosses anterior to the aorta to join the normal pre-hepatic segment of IVC. The right renal vein normally drains to the IVC. A venous structure is seen to the right of the aorta communicates the IVC at the level of the right renal vein to the right common iliac vein probably a variant of IVC duplication.