Recurring kidney infections, bleeding, or stones will prompt x rays of the kidneys. The appearance of medullary sponge kidney on an intravenous pyelogram (x rays of the upper urinary system) is characteristic.

A modular or medullary sponge kidney is a congenital birth defect of the tiny tubes inside the kidneys. This condition is known as CacchiÐRicci disease.

Although some cases of this disorder seem to be inherited, usually the cause is not known.

Yes, medullary sponge kidney can indeed cause bleeding and cramping; however, being pregnant will not impact upon the symptoms. The bleeding is caused from small stones formed due to the condition if enough liquids are not drunk, and cramping from the recurrent infections associated with the condition. A sufficient amount of water, as well as regular checkups for kidney infection, can prevent these symptoms.

Divisions of sponge-like tissue that filters blood.