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 choose prostate cancer screening, you should get a digital rectal exam and PSA test every year to check for prostate cancer. Colonoscopy every 10 years or virtual colonoscopy every 5 years to check for colorectal cancer.