Change in Penile Length Following Bilateral Nerve-Sparing Radical Prostatectomy

July 10, 2014 updated by: Memorial Sloan Kettering Cancer Center

Assessing the Change in Penile Length Following Bilateral Nerve-Sparing Radical Prostatectomy

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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

121

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New York
      • New York, New York, United States, 10065
        • Memorial Sloan-Kettering Cancer Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

19 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Sampling Method

Non-Probability Sample

Study Population

Patients undergoing open, laparoscopic, or robotic-assisted laparoscopic radical prostatectomy at MSKCC.

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
open, laparoscopic, or robotic-assisted lap
Patients will also be assessed for penile length and the presence of Peyronie's Disease at these specified times.
Behavioral: Penile Exam, Peyronie's Plaque and Erectile function assessment

At the baseline visit, the patient's co-morbidities, height, weight with calculation of body mass index will be documented.

After surgery, the patient will be instructed to keep a diary to record erectile function including how often they use a PDE-5 inhibitor or injection therapy and each time they get an erection and the level of rigidity. The diary is required to document PDE-5 inhibitor and injection therapy use and response in each sexual encounter, unlike the IIEF questionnaire, which addresses erectile function over a 4-week period. Accurate documentation is essential for erectile function assessment, as patient choice of erectile function medication may differ in each sexual encounter, and accordingly, the achieved rigidity level.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Assess the impact of radical retropubic prostatectomy on penile dimensions.
Time Frame: conclusion of the study
conclusion of the study
Assess the impact of radical retropubic prostatectomy on the development of Peyronie's Disease.
Time Frame: conclusion of the study
conclusion of the study

Secondary Outcome Measures

Outcome Measure
Time Frame
Assess the association between penile length change and erectile function.
Time Frame: conclusion of the study
conclusion of the study

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Memorial Sloan Kettering Cancer Center

Investigators

  • Principal Investigator: John Mulhall, MD, Memorial Sloan Kettering Cancer Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2008

Primary Completion (Actual)

July 1, 2014

Study Completion (Actual)

July 1, 2014

Study Registration Dates

First Submitted

December 1, 2008

First Submitted That Met QC Criteria

December 1, 2008

First Posted (Estimate)

December 2, 2008

Study Record Updates

Last Update Posted (Estimate)

July 14, 2014

Last Update Submitted That Met QC Criteria

July 10, 2014

Last Verified

July 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 08-135

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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