alt=Simple<unk> .jpg A<unk>  is a fluid collection in or on the kidney. There are several types based on the Bosniak classification. The majority are benign, simple cysts that can be monitored and not intervened upon. However, some are cancerous or are suspicious for cancer and are commonly removed in a surgical procedure called nephrectomy. Numerous<unk> s are seen in the cystic kidney diseases, which include polycystic kidney disease and medullary sponge kidney.
Renal cyst
Renal medullary fibroma
Ectopic kidney
Glomerulonephrosis
Cystic nephroma
Renal oncocytoma
Hydronephrosis
Page kidney