Cryoablation (also called cryotherapy) is freezing the abnormal cells or kidney tumors. This minimally invasive process typically only requires an outpatient stay in the hospital. 

You’ll be taken into the CT scanning room. Monitors for blood pressure, heart rhythm and rate, and oxygen level will be attached to you. You then will be given light sedation to put you to sleep.

Images are obtained and the area is identified and marked by the physicians. You will be given local numbing medication into the skin, and then cryotherapy needles will be placed into the abnormal tissue or mass.

A biopsy of the abnormal tissue or mass will be taken if appropriate. The amount of needles needed to perform the cryotherapy depends on the size of the abnormal tissue or mass. The needles are placed in the abnormal tissue or mass and the freezing begins; two sessions of freezing are completed.

After the procedure, you’ll be monitored for any side effects that include pain, nausea/vomiting or bleeding from the procedure site. You’ll be on bedrest for about four hours and may get up with help to use the restroom if the nursing staff determines you’re stable.

If you are recovering well from the procedure, you may be allowed to go home the same day. Sometimes patients need to stay overnight for observation.