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.
If, however, cancer is not diagnosed the consultant will probably suggest 6 or 12 monthly PSA tests and repeated digital rectal examinations. If the PSA continues to rise and if there is clinical suspicion of prostate disease a repeat biopsy may be recommended.