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.
Sextant (6) samples from selected portions of prostate via a spring-loaded 18 gauge biopsy has a false negative rate of 12% due to sampling error Currently, up to 18 samples are now taken However, as of 2014, Medicaid has limited the number of biopsy sites to 9 for full 88305 reimbursement, so some practices are capping the number of biopsies at 9 (AUA - New Codes for Prostate Pathology Services)