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Polycystic kidney disease
Polycystic kidney disease is a disorder in which many clusters of cysts develop primarily within your kidneys. Cysts are noncancerous (benign), round sacs that contain water-like fluid. They vary in size from tiny sacs to sacs large enough to hold several quarts of fluid. Having a benign kidney cyst is common. A benign, simple kidney cyst doesn't require treatment. And having one or more kidney cysts doesn't mean you have polycystic kidney disease. Polycystic kidney disease isn't limited to your kidneys, although the kidneys usually are the most severely affected organs. The disease can cause cysts to develop in your liver, pancreas, membranes that surround your brain and central nervous system, and seminal vesicles. Other complications may occur as well. The greatest risk for people with polycystic kidney disease is high blood pressure (hypertension) that develops as a result of their kidney disease. Complications from hypertension are the leading cause of death in people with this disease. Kidney failure also is common with polycystic kidney disease. Abnormal genes are the cause, and there's no way of preventing or reversing the development of kidney cysts in affected people. But the disease varies greatly in its severity, and some complications are preventable. Regular checkups can lead to treatments to reduce damage to your kidneys from complications such as high blood pressure. Signs and symptoms Signs and symptoms of polycystic kidney disease may include:
Causes Abnormal genes cause polycystic kidney disease, and the genetic defects mean the disease runs in families. The disease has two types, caused by different genetic flaws:
Research has identified at least three genes that may be responsible for ADPKD and one gene that may be responsible for ARPKD. About one person in 10 with polycystic kidney disease has no family members with the disorder. In these cases, instead of inheriting a defective gene, the gene spontaneously mutates, causing polycystic kidney disease. When to seek medical advice It's not uncommon for people to have polycystic kidney disease for years without developing signs or symptoms and without knowing they have the disease. If you exhibit some of the signs and symptoms of polycystic kidney disease, which include high blood pressure, an increase in the size of your abdomen, blood in your urine, back or side pain, or kidney stones, see your doctor to determine what might be causing them. If you have a first-degree relative — parent, sibling or child — with ADPKD, see your doctor to discuss the pros and cons of screening for this disorder. Polycystic kidney disease > next > 1 > 2 > 3 > 4
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