The kidneys are two bean-shaped organs. Each kidney is about the size of a fist. Your kidneys filter extra water and wastes out of your blood and make urine. Kidney disease means your kidneys are damaged and can't filter blood the way they should.
Kidney problems include acute kidney injury, kidney cysts, kidney stones, kidney infections and artery and vein conditions, such as:
- Renal artery stenosis: Narrowing of the arteries that carry blood to the kidneys
- Renal vein thrombosis: A blood clot in the vein that drains blood from a kidney
- Fibromuscular dysplasia: Congenital (present at birth) artery defect that limits blood flow to the kidneys