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The anatomical variations of renal blood vessels have interested anatomists for more than a century. We describe a complex variation of the renal blood vessels found during the dissection routine. A female cadaver, approximately of 60 years, embalmed with 10% formalin solution, presented bilateral multiple prehilar branching of renal arteries and multiple tributaries forming respective renal vein, made a loop around ureter. Bilateral hydroureter could not be correlated to the condition as the medical history was unavailable. This is a complex anatomical variation of the renal vessels which might have functional implications, once the vascular loop described might be a compression factor for the ureter.