Doctors have revealed in Scotland that they are giving tumor frostbite to fight prostate cancer.

The therapy, called cryotherapy, involves the freezing of tumors and then thawing, with the cancer cells being shattered and killed ultimately.

This treatment is currently available only to men whose prostate cancer has revived despite radiotherapy and tumors that can not be operated, where surgery involves risk.

Hing Leung, Professor of Urology and Surgical Oncology said, "Without intervention such as Cryotherapy, these patients will eventually develop cancer spread within five years leading to premature death".

He said that it was very stringent to measure improvement in life expectant among treated patients because it's a new procedure.

Doctors could monitor somehow keep a track of Prostate Specific Antigen (PSA), which displays the amount of cancer there is in the prostate.

Professor Leung said that these results are most encouraging and very exciting. An 'undetectable' level of PSA has been attained by all patients till now.

Surgery was not advisable since the tumor was right on the edge of the gland- which means that there was a risk that the cancer had already spread even if the prostate has already been taken out.