Signs and symptoms of kidney cancer

Small kidney cancers do not usually cause symptoms. They are often diagnosed by chance. For example, they may be diagnosed when you are having tests or scans for another reason.

When kidney cancer does cause symptoms, the most common symptom is blood in the pee (urine). Other symptoms may include:

• a dull pain in your side, between the top of the tummy (upper abdomen) and back
• a high temperature (fever) or night sweats
• feeling very tired (fatigue)
• weight loss for no obvious reason
• loss of appetite
• a lump in your side or back.

Most people with these symptoms do not have kidney cancer. These symptoms can be caused by more common conditions. But if you have any symptoms, it is important to get them checked by your doctor.

We understand that showing any symptoms of what could be cancer is worrying. The most important thing is to speak to your GP as soon as possible. We are also here if you need someone to talk to. You can: 

• Call the Macmillan Support Line on 0808 808 00 00.
• Chat to our specialists online.