Kidney biopsy
A kidney biopsy is a procedure to take a small piece of tissue from the kidney. A specialist doctor (pathologist) looks at it under a microscope and can tell if you have kidney cancer and which type it is. Knowing this helps your doctor decide on the best treatment for you. Why you might have a kidney biopsy Your doctor will ask you to have a kidney biopsy to: find out if you have kidney cancer if other tests haven’t been clear help them decide if a small kidney cancer can be watched before being treated (active surveillance) tell them