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 you're over 50 and you have signs of prostate cancer, such as an enlarged prostate or a high PSA, your doctor may want to take another biopsy in the future. Researchers at a VA hospital in Oregon have developed a way to determine which patients need a second biopsy based on their PSA adjusted for prostate size.