The kidneys are a pair of bean-shaped organs located below the rib cage, one on each side of the spine. The kidneys help remove waste products from the body, maintain balanced electrolyte levels, and ...

Explore the anatomy of a duplex kidney and how two separate drainage systems can develop within a single kidney.

In this illustration, a mass (depicted as jagged) is shown on a kidney (Level I, at left). The tumor extends up the inferior vena cava vein (blue) to the liver (Level III) and approaches the heart ...