A renal (kidney) cyst is a fluid-filled closed sac that can develop in any part of the kidney, such as renal cortex, renal medulla or the pelvis. Kidney cyst is a common kidney disorder in people over 50 years old. The cystic epithelial cell can secrete cystic liquid gradually and finally can oppress surrounding renal tissues and result in gradual kidney function decline. A grown up kidney cyst may very likely get ruptured and combined with infections, which can result in aggravated waist or back pain and blood in urine. The following is more detailed information about kidney cysts.
What causes kidney cyst?
Our kidneys are made up of blood vessels that can carry blood to tiny filters. Each filter is connected to a tube. There are about a million units of filter and tube in each kidney. A cyst occurs when a single tube expands, often to a very large size. While the exact cause of a swollen tube is still unknown, the following factors are among major concerns of developing kidney cysts:
1. Congenital dysplasia, which mainly includes medullary sponge kidney, dysplasia, infantile (or recessive) polycystic kidney disease and adult polycystic kidney disease.
2. Gene mutation(non-genetic), which occurs in the process of embryogenesis
3. Infections offers preferable environment for development of kidney cysts. Commonly seen infections mainly include upper respiratory infections, urinary tract infections, gastrointestinal tract infections, skin infections, traumatic infections and device-related infections.
4. Toxins, including chemical agents, radiation, pollution, or such nephrotoxic medicines such as Kanamycin, Gentamicin, sulfonamides, rifampin and indomethacins.
What symptoms can a kidney cyst cause?
The growing cyst can cause expansion and swelling of the kidneys and result in discomfort and pains in the abdomen or waist. A ruptured cyst or combination of infections can lead to gross or miscroscopic hematuria and deteriorated waist or back pains. Protein in urine can also be seen in some patients.
Renal ischemia caused by oppression of augmented kidney cyst can lead to high blood pressure. With the illness condition progressing, hypertension will become more and more difficult to be controlled. Kidney function declines in the developing course, which can be manifested as dropped GFR level.
What can we do for a kidney cyst?
Antibiotics are needed when combined infections occur and anti-hypertensive medications are also necessary to slow down aggravation speed. A beneficial diet is also necessary. Alcohol and cigarettes can stimulate secretion of cyst liquid so patients should get rid of the habit of smoking and drinking.
Follow a low-salt diet and avoid stimulating foods such as salted, spicy, polluted leftover foods and barbecues. Regular tests are needed to keep close observation for the size of the cyst and kidney function state. A kidney cyst more than 5cm in diameter may likely to get ruptured and cause renal parenchyma damage. Thereby, positive treatment is advised. Patients suffering from constant severe pains also need to choose timely and proper treatment.
You may get more detailed information about your specific condition by consulting online experts or emailing us directly.
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