what is a cyst on the kidneys do
Kidney Cysts Generally, simple kidney cysts do not cause any symptoms. 1  However, if the cyst grows large enough, symptoms may begin to be noticeable. Symptoms of larger cysts include: 2  A dull ache in the back or side. 3  Elevated fever. 4  Pain in the upper portion of the abdomen. Kidney Cysts There are two different types of kidney cysts: simple and complex. 1  Simple kidney cysts are typically benign and often times are not accompanied by any symptoms. Simple kidney cysts are the most commonly diagnosed type. 2  Complex kidney cysts are cysts that have characteristics that may make them cancerous.