Doctor in the House : Cryotherapy Revisited

Cryotherapy applies nitrogen or argon gas at extremely cold temperatures to destroy diseased tissue. Now, it is being used to treat cancer, although it isn't always applicable. When can it be used, and what does it say about the future of medicine and cancer?

Dr. George Lee, our resident doctor in the house, brings a guest with him this week, Dr. Jayson S. Brower, interventional radiologist, to discuss the application of cryotherapy in cancer.