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A kidney mass is a growth that arises from inside the kidney, according to Washington University School of Medicine in St. Louis. Most kidney masses are found when a patient is undergoing evaluation for something else and receives an ultrasound or CT scan.


It is not clear what causes some types of kidney masses as of July 2015, according to Mayo Clinic. Kidney cysts are fluid-filled masses that form on or in the kidneys. Simple kidney cysts rarely cause complications, but more complex cysts can impair kidney function.


For many physicians, surgery is an option for a kidney mass at clinical stage 1, according to the American Urological Association. At this point, the mass is less than 7 centimeters. About 20 percent of stage 1 masses are benign.


Most cases of renal masses do not show any symptoms, states the Washington University School of Medicine in St. Louis. Doctors usually find the masses accidentally during a diagnosis for another condition. For example, a patient experiencing abdominal pain may undergo a CT scan that happens to ident


A renal mass on the kidneys is a growth that arises from the kidney, according to the Division of Urology at Washington University School of Medicine. The most common renal mass is a cyst, which is a sac filled with fluid arising from the kidney. Cysts rarely cause problems.


Having a mass or tumor on a kidney is often accompanied with other symptoms such as bloody urine, appetite loss, flank pain, weight loss and fatigue, states WebMD.com. It can also cause anemia and swelling in the limbs.


Liver tumors are removed by taking out the part of the liver that contains them in a procedure called resection, according to Johns Hopkins Medicine. Liver resections, also called partial hepatectomies by the American Cancer Society, may be performed using a less invasive laproscopic method or by tr


Simple nephrectomy involves making an incision up to 12 inches and removing an entire kidney, while partial nephrectomy involves creating a smaller cut and removing only part of a kidney, explains Healthline. During laparoscopic surgery, a doctor makes several tiny cuts instead of a single long inci


Surgery is the primary treatment for most kidney cancers, according to the Kidney Cancer Association. There are different types of surgeries available, and the specific procedure depends on the type of cancer, the size of the tumor, the extent of the cancer and the overall health of the patient.


Specific risks that are associated with kidney removal include injury to nearby organs, hernia of the wound, kidney failure and poor functioning of the remaining kidney, as stated by National Institutes of Health's MedlinePlus. It may also have other common surgery risks, including bleeding, breathi