Renal cyst is a very common disorder, especially among the elderly. It can be divided into simple and complex. The majority of patients have simple renal cyst which is benign. Complex renal cyst can occur in some cases and it has high chance of becoming cancerous. If you are diagnosed with complex renal cyst, you require further testing to differentiate the cyst from a a kidney cancer.Knowing the causes of complex renal cyst can help you manage the disease better.

Renal cysts may be congenital or present at brith, or people can develop them later in life. The cyst may be caused by some intestinal parasite infection, for example, tapeworm.Additionally,some required cysts can occur among people who undergo peritoneal dialysis and hemodialysis. Multiple and bilateral renal cysts commonly occur in this part of patients.