PATHOLOGY

Detailed explanation-1: -You have two kidneys that filter your blood, removing wastes and extra water to make urine.

Detailed explanation-2: -Most humans are born with two kidneys as the functional components of what is called the renal system, which also includes two ureters, a bladder and a urethra.

Detailed explanation-3: -Duplex kidneys occur in 1% of the population, the most common complication being infections caused by urine flowing back up to the ureter. But some patients have been delighted with their extra organs.

Detailed explanation-4: -The prevalence of supernumerary kidneys can be estimated to be 1:26750 with CT imaging.