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.
Ages 50-75. 1  If you choose prostate cancer screening, you should get a digital rectal exam and PSA test every year to check for prostate cancer. 2  Colonoscopy every 10 years or virtual colonoscopy every 5 years to check for colorectal cancer.