other than skin cancer,prostate cancer is the most common cancer is man over 50. In this condition,the prostatic enlargement occurs to the outside,so there is little effect on the urethra. the lack of the typical symptoms seen with Benign Prostatic hyperplasia may allow the cancer to proceed undetected. A digital rectal exam can be performed from the rectum by palpating the prostate to check its size. This cancer can also be detected by a blood test measuring prostate-specific antigen levels. This antigen is produced in greater amounts when prostate cancer is present.Eighty percent of individuals survive prostate cancer if it is detected and treated early.