Melanoma: The most dangerous form of skin cancer, a malignancy of the melanocyte, the cell that produces pigment in the skin.
Statistically, the probability of having a prostate cancer present with a PSA of between 4 and 10 is around 22 per cent. Once the PSA level rises above 10, the probability goes up to the order of 64 per cent.
The procedure is performed by a doctor experienced in prostate ultrasound and biopsy. It will last 10 to 20 minutes. You will lie on your left side, with your knees drawn up. The ultrasound probe will be inserted into the rectum and the biopsies will be taken.