Cryotherapy is a surgical procedure which uses liquid nitrogen to freeze and kill prostate cancer cells. It is carried out under anaesthesia (general or spinal) and requires a short stay in hospital.It is generally used to treat early stages of prostate cancer, in which the tumour has not spread outside the gland (Stage I + II). Unfortunately, most men who have cryosurgery become impotent.

Figure 1: Cryotherapy