Urologists around the world perform minimally invasive procedures with cryosurgery including prostate cancer and renal cancer with cryotherapy guided and monitored with ultrasound. New cryo applications are currently being developed for ablation treatment of liver metastases as well as other malignant and benign tumors and palliative interventions. Cryosurgical treatments for tumors are often performed by Interventional Radiologists (IR) using imaging modalities such as CT and MRI.

The Freezing Process 
Cryotherapy systems use compressed Argon gas through the Joule-Thomson effect to produce extremely low temperatures. As the gas passes through cryoablation needles, the tip of the needle is cooled, forming an iceball, which engulfs the tumor and destroys the tissue.

The basic principles of cryosurgery for tumors are fast cooling of the tissue to a lethal temperature, thawing, and repetition of the freeze-thaw cycle. Further research is continuously being conducted to better understand the cellular mechanisms involved in cryosurgery in order to increase the efficacy of cryosurgery for specific tumor ablation.

Learn more about Cryotherapy for Prostate Cancer