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Double retroaortic left renal veins as a possible cause of pelvic congestion syndrome: imaging findings in two patients

Bakent University Adana Teaching and Medical Research Centre, Department of Radiology, Adana, Turkey

View larger version (34K): [in a new window]   Figure 1. (a) Coronal diagram shows embryological development of the renal veins and inferior vena cava. Three paired embryonic vessels and their anastomoses contribute the inferior vena cava and renal veins. Dashed lines represent trace of the left renal vein variants; normal left renal vein, type 1 retroaortic left renal vein and type 2 retroaortic left renal vein. (b) Coronal diagram shows upper (Type 1) and lower (Type 2) double retroaortic left renal veins (RLRV) identified in our patients. LOV: left ovarian vein, IVC: inferior vena cava, LRV: left renal vein, card: cardinal, post: posterior.

View larger version (54K): [in a new window]   Figure 2. 55-year-old woman with pelvic congestion syndrome. (a,b) Axial and (c) coronal thin-slab maximum intensity projection multidetector row CT images show upper (arrows) and lower (arrowheads) retroaortic left renal veins and left pelvic varices (double arrows in (c)) that drain into the lower retroaortic left renal vein. AO: aort, IVC: inferior vena cava, RLRV: retroaortic left renal vein, ROV: right ovarian vein, LOV: left ovarian vein, U: uterus.