Kidney malrotation with aberrant renal arteries and extra-renal calyces - case report

Variations in the ureteral patterning, venous, and arterial of the kidneys are common; however, concomitant involvement with two systems is rare. The current case was discovered during a routine dissection course that took place in the Human Anatomy laboratory of the University of Rwanda. While dissecting the retroperitoneal space of one specimen, it was realized that the right kidney was mal-rotated with a ureter connected to the anterior side. That right kidney also had two aberrant arteries in addition to the main renal artery, those two aberrant arteries emerged from the inferior pole of the kidney. Renal arterial variants may be grouped as supernumerary, multiple, and aberrant, in the current case it is aberrant. It is expected that the kidney rotates from anterior to medial around the longitudinal axis during development, and the renal hilum turns toward the medial direction. However, in the current case, the hilum faced anteriorly.