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A cyst is a sac filled with fluid. Simple kidney cysts are common as people age, and usually harmless. Some diseases, though, cause kidney cysts.
Polycystic kidney disease (PKD)
PKD runs in families. Many cysts grow in the kidneys, enlarging them and making them work poorly; about half of people with the most common type eventually develop kidney failure. PKD also causes cysts elsewhere in the body, such as the liver.
There are often no symptoms at first. Later ones include:
- pain in the back and lower sides
- headaches
- blood in the urine
Doctors diagnose PKD with imaging tests and family history. There is no cure, but treatments ease symptoms and complications: medicines, lifestyle changes and, if the kidneys fail, dialysis or a kidney transplant.
Acquired cystic kidney disease (ACKD)
ACKD develops in people with chronic kidney disease, especially those on dialysis. Unlike PKD, the kidneys stay a normal size and cysts do not form in other organs. It often causes no symptoms, and the cysts are usually harmless and need no treatment. If they do cause complications, treatment includes medicines, draining the cysts or surgery.
Sources
- MedlinePlus, U.S. National Library of Medicine, "Kidney Cysts," drawing on the NIH National Institute of Diabetes and Digestive and Kidney Diseases. https://medlineplus.gov/kidneycysts.html
- Rewritten in hubnx's own words.
Лицензия: CC0 1.0 (общественное достояние) · По материалам medlineplus.gov
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