Extra renal calyces, precaval renal artery and a variant right testicular artery – are they interrelated? A case report with embryological insight

Variations in the renal vasculature and testicular artery are common within the human body. However, extra renal calyces and precaval renal arteries are uncommon. In the present case we report extra renal calyces of both kidneys, two right precaval renal arteries, and an abnormal right testicular artery. The kidneys and gonads develop from the intermediate mesoderm. The arteries supplying them bud from the dorsal aorta. This vascular plexus is arranged in a ladder-like manner due to the ascent of kidneys and descent of gonads. Any variation in the vascular supply of these structures must be interrelated, hence care has been taken to clarify the embryological aspect of these variations.