What are the symptoms of kidney cancer?

Kidney cancer often causes no symptoms in its early stages (when it's small and hasn't spread). As the cancer grows, it can cause symptoms, such as:

• Blood in the urine. Blood in the urine (hematuria) is one of the most common signs of kidney cancer. You may be able to see the blood easily in your urine. Or the blood cells may show up only when a urine test is done.

• Pain in the side or lower back.  Side and back pains can be caused by the tumor growing and pushing against nearby organs. It may feel like pressure also. It's usually felt on one side only.

• A lump in the kidney area. If you feel a lump in the kidney area (your lower back or side) and have not had an injury, a cancer mass may be there. The lump may hurt.

• Tiredness. Tiredness that doesn't get better with rest is a common problem for people with cancer. It's often caused by a low number of red blood cells (anemia).

• Fast weight loss.  Weight loss that happens quickly without any effort can be a sign of kidney cancer.

• Loss of appetite

• Swelling of the legs and ankles

• Fever not caused by an infection or that comes back

• High blood pressure

• A cluster of swollen blood vessels around a testicle that develops quickly

• Bone pain, difficulty breathing, and headache. These are symptoms caused by the distant spread to other organs or tissue.

When to see your healthcare provider

Many of these symptoms may be caused by other health problems. Still, it's important to see a healthcare provider if you have these symptoms. Only a healthcare provider can tell if you have cancer.