Kidney failure occurs when your kidneys lose the ability to filter waste from your blood sufficiently. It may not cause symptoms in the early stages. Your kidneys filter your blood and remove ...

Although most people have two kidneys, only one kidney can function just as well as two. You may need to take some precautions to avoid injury to your kidney, though, and see a doctor for regular ...

From the Urological Department of the Massachusetts General Hospital. Mintz — Resident, Urological Service, Massachusetts General Hospital. Stewart — Surgical Resident, Massachusetts General ...

Renal agenesis is a medical condition where an individual is born with one kidney instead of two, while kidney dysplasia is when a person is born with two kidneys, but only one of them is functional.