• Assess the impact of radical retropubic prostatectomy on penile dimensions. [ Time Frame: conclusion of the study ] [ Designated as safety issue: No ]
• Assess the impact of radical retropubic prostatectomy on the development of Peyronie's Disease. [ Time Frame: conclusion of the study ] [ Designated as safety issue: No ]

Some men complain of changes in the shape or dimensions of their penis after undergoing radical prostatectomy (removal of the prostate) for prostate cancer. Changes in penile dimensions include shortening or decreased girth. Changes in shape include a curvature or bending of the penis, and/or the appearance of indentation. These changes may be associated with formation of scar tissue involving the covering of the erection chambers, known as "plaque". The appearance of indurated plaque and a resultant curvature or indentation is a well described medical condition known as "Peyronie's Disease" and may occur in men who did or did not undergo radical prostatectomy. The purpose of this study is to evaluate these changes in penile shape and dimensions.

Inclusion Criteria:

• Males, age 21 years or older (no maximum age limit)
• Ability and willingness to give informed consent
• Clinically localized prostate cancer
• Open, laparoscopic or robotic-assisted radical prostatectomy
• Must be sexually active (penetrative or non-penetrative sexual encounters, either with a partner or self-stimulation)

Exclusion Criteria:

• Preoperative / Postoperative pelvic radiation therapy
• Preoperative / Postoperative hormonal treatment
• Preoperative Peyronie's disease
• Preoperative presence of a penile implant