Pathological examination of several thousand samples of prostate cancer removed surgically show that most men have a “dominant” or large lesion in one side of the prostate, and several smaller lesions elsewhere in the gland. In a conventional radical prostatectomy, the entire prostate is removed, cutting outside the prostate capsule. In the proposed approach, the Menon Precision Prostatectomy, we will perform a traditional radical removal, staying outside the prostate capsule on the side of the visualized or dominant lesion. On the opposite side, which does not have a dominant lesion, we will remove all of the prostate, but attempt to leave behind a thin rim of cancer free tissue, the prostate capsule. Real time biopsies will be obtained at the time of surgery, sampling the remnant capsular tissue thoroughly. If the Pathologists detect cancer cells in this tissue, it will be removed, effectively converting the operation into a conventional radical prostatectomy. If there is no cancer, the capsule will be left intact providing an added layer of protection to the network of nerves involved in the maintenance of erectile function. This critical step is what makes the procedure a “Precision Prostatectomy”. The concept is similar to that of a lumpectomy for breast cancer, where the tumor is removed but not the entire breast, or a partial nephrectomy for kidney cancer, where the tumor is removed but not the entire Kidney.