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.
The biopsy needle is used to extract a tissue sample from one or more areas of the prostate. The biopsy samples are sent to a pathologist (physician who identifies diseases by studying cells under a microscope) who analyzes the sample(s) for the presence of prostate cancer.