kidney cysts symptoms
Symptoms. Generally, simple kidney cysts do not cause any symptoms. However, if the cyst grows large enough, symptoms may begin to be noticeable. Symptoms of larger cysts include: 1  A dull ache in the back or side.2  Elevated fever. 3  Pain in the upper portion of the abdomen.ymptoms. Generally, simple kidney cysts do not cause any symptoms. However, if the cyst grows large enough, symptoms may begin to be noticeable. Symptoms of larger cysts include: 1  A dull ache in the back or side.