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Your kidneys are two bean-shaped organs, each about the size of your fists. They are located near the middle of your back, just below the rib cage. Inside each kidney about a million tiny structures called nephrons filter blood. They remove waste products and extra water, which become urine. The urine flows through tubes called ureters to your bladder, which stores the urine until you go to the bathroom.

Most kidney diseases attack the nephrons. This damage may leave kidneys unable to remove wastes. Causes can include genetic problems, injuries, or medicines. You are at greater risk for kidney disease if you have diabetes, high blood pressure, or a close family member with kidney disease. Chronic kidney disease damages the nephrons slowly over several years. Other kidney problems include:

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Illustration of the right kidney
Results 1 - 10 of 5,373 for kidney
  1. Kidney Diseases (National Library of Medicine)  
    Your kidneys are two bean-shaped organs, each about the size of your fists. They are located near the ... back, just below the rib cage. Inside each kidney about a million tiny structures called nephrons filter ...
  2. Urinary Tract Infections (National Library of Medicine)  
    ... removing wastes and extra water. It includes two kidneys, two ureters, a bladder, and a urethra. Urinary ... NIH: National Institute of Diabetes and Digestive and Kidney Diseases
  3. Kidney Cysts (National Library of Medicine)  
    ... fluid-filled sac. There are two types of kidney cysts. Polycystic kidney disease (PKD) runs in families. In PKD, the ... place of the normal tissue. They enlarge the kidneys and make them work poorly, leading to kidney ...
  4. Chronic Kidney Disease (National Library of Medicine)  
    You have two kidneys, each about the size of your fist. Their main job is to filter wastes and excess water out of ... help control blood pressure, and make hormones. Chronic kidney disease (CKD) means that your kidneys are damaged ...
  5. Diabetic Kidney Problems (National Library of Medicine)  
    ... too high. Over time, this can damage your kidneys. Your kidneys clean your blood. If they are damaged, waste ... in your blood instead of leaving your body. Kidney damage from diabetes is called diabetic nephropathy. It ...
  6. Kidney Cancer (National Library of Medicine)  
    You have two kidneys. They are fist-sized organs on either side of your backbone above your waist. The tubes inside filter and ... blood, taking out waste products and making urine. Kidney cancer forms in the lining of tiny tubes ...
  7. Kidney Failure (National Library of Medicine)  
    Healthy kidneys clean your blood by removing excess fluid, minerals, and wastes. They also make hormones that keep your ... strong and your blood healthy. But if the kidneys are damaged, they don't work properly. Harmful ...
  8. Kidney Stones (National Library of Medicine)  
    A kidney stone is a solid piece of material that forms in the kidney from substances in the urine. It may be ... sand or as large as a pearl. Most kidney stones pass out of the body without help ...
  9. Kidney Transplantation (National Library of Medicine)  
    A kidney transplant is an operation that places a healthy kidney in your body. The transplanted kidney takes over the work of the two kidneys that failed, so you no longer need dialysis. ...
  10. Kidney Stones Interactive Tutorial (Patient Education Institute)  
    Kidney Stones Introduction Kidney stones are fairly common. Although they can be very painful, they are treatable, ... urinate. The urine is emptied through the urethra. Kidney Stones Kidney stones vary in size and shape. ...
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