What Are Simple Renal Cysts Mean

Simple Renal Cysts may be a congenital abnormality that there is one or several cysts with different sizes usually in a kidney. As we are getting old, we have more chances of suffering from Simple Renal Cysts. As is reported, fifty percent people over 50 years old will have those cysts which can be diagnosed through B ultrasound and CT (Computed Tomography). Compared with Polycystic Kidney Disease (PKD), Simple Renal Cysts have its own characters.
Simple Renal Cysts is a genetic disorder
So far, scholars have not found out what cause Simple Renal Cysts, but some consider this disease as a congenital abnormality, while others think it is acquired after birth because of local lack of blood and oxygen in kidney or the blockage in kidney tubules. When people get old, the blockages easily occur in distal tubules and manifolds. The fluid blocked in tubules will stimulate kidney tubular epithelial cells developing into cystic cells. As those cysts grow, they will break away from kidney tubules and will not connect with outside.
The cysts usually locate in one kidney
Through B ultrasound and CT, Simple Renal Cysts usually show one or several cysts in one kidney, but sometimes they can be found in both kidneys. They locate in renal cortex and renal medulla. Their diameter can be 0.5 to 1cm or 3 to 8cm. With paille ropy fluid inside and thin transparent wall, they tend to shrink automatically, but if they are infected, the wall will become thick, fiberized and calcified. As those cysts are not linked with other renal tissues like kidney pelvis, they usually do not arouse great damage to the whole kidneys.
Simple Renal Cysts will not damage renal function
Commonly, severe symptoms will not occur among patients with Simple Renal Cysts. This disease is usually found unconsciously in checking other diseases. Some big cysts stress blood vessels nearby, cause anoxia and increase rennin, which occasionally cause hematuria, low back pain and high blood pressure. There are indeed some dangers of renal calices blockage and secondary infections. When they are removed or shrunk through operation or decortication, renal function is normally not damaged by them.
Thus, usually, there is no need for patients to receive treatments to remove Simple Renal Cysts, but it is important for them to prevent the cysts breaking and the secondary infection which may cause fatal complications.
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