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Phimosis and Paraphimosis

  • Author: Hina Z Ghory, MD; Chief Editor: Gil Z Shlamovitz, MD, FACEP  more...
 
Updated: Jun 02, 2016
 

Background

Phimosis refers to the inability to retract the distal foreskin over the glans penis. Physiologic phimosis occurs naturally in newborn males. Pathologic phimosis defines an inability to retract the foreskin after it was previously retractible or after puberty, usually secondary to distal scarring of the foreskin.

Paraphimosis is the entrapment of a retracted foreskin behind the coronal sulcus. Paraphimosis is a disease of uncircumcised or partially circumcised males.

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Pathophysiology

The uncircumcised male penis comprises the penile shaft, the glans penis, the coronal sulcus, and the foreskin/prepuce, as shown below.

Anatomy of the penis. Anatomy of the penis.

Physiologic phimosis results from adhesions between the epithelial layers of the inner prepuce and glans. These adhesions spontaneously dissolve with intermittent foreskin retraction and erections, so that as males grow, physiologic phimosis resolves with age.

Poor hygiene and recurrent episodes of balanitis or balanoposthitis lead to scarring of preputial orifices, leading to pathologic phimosis. Forceful retraction of the foreskin leads to microtears at the preputial orifice that also leads to scarring and phimosis. Elderly persons are at risk of phimosis secondary to loss of skin elasticity and infrequent erections.

Patients with phimosis, both physiologic and pathologic, are at risk for developing paraphimosis when the foreskin is forcibly retracted past the glans and/or the patient or caretaker forgets to replace the foreskin after retraction. Penile piercings increase the risk of developing paraphimosis if pain and swelling prevent reduction of a retracted foreskin.

With time, impairment of venous and lymphatic flow to the glans leads to venous engorgement and worsening swelling. As the swelling progresses, arterial supply is compromised, leading to penile infarction/necrosis, gangrene, and eventually, autoamputation.

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Epidemiology

Up to 10% of males will have physiologic phimosis at 3 years of age, and a larger percentage of children will have only partially retractible foreskins. One to five percent of males will have nonretractible foreskins by age 16 years.[1, 2]

In a Danish study, phimosis was the most frequently reported indication (95.0%) for foreskin surgery in boys younger than 18 years. The remaining 5.0% underwent surgery because of frenulum breve causing problems during erection. Nine patients needed a second surgery because of recurrent phimosis.[3]

A study of adult patients who underwent circumcision found that the most common indications were phimosis (46.5%), dyspareunia (17.8%), balanitis (14.4%), and concurrent phimosis and balanitis (8.9%). In most older patients, the reason for adult circumcision was concurrent phimosis and balanitis or cancer, whereas in younger patients, dyspareunia was the most common cause. The complication rate was 3.5%, and there was no significant difference in complication rates between the older patient group and the younger patient group.[4]

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Prognosis

Complete resolution is expected with appropriate treatment.

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Patient Education

Parents should be educated about the normalcy of congenital phimosis and the time course of its resolution. The dangers of forcibly retracting the foreskin for hygienic purposes should be stressed. If the prepuce does not readily retract, parents should not attempt to clean under it.

Patients and parents of children should be educated on the importance of reduction of the foreskin after each cleaning.

All providers of adult care should be made aware of the risk of paraphimosis associated with bladder catheterization. They should be reminded to always reduce the foreskin after cleaning and catheterization.

For patient education resources, see the Men's Health Center, as well as Foreskin Problems and Circumcision.

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Contributor Information and Disclosures
Author

Hina Z Ghory, MD Assistant Attending Physician, Department of Emergency Medicine, New York-Presbyterian Hospital, Weill Cornell Medical Center

Hina Z Ghory, MD is a member of the following medical societies: American College of Emergency Physicians, Phi Beta Kappa

Disclosure: Nothing to disclose.

Coauthor(s)

Rahul Sharma, MD, MBA, FACEP Medical Director and Associate Chief of Service, NYU Langone Medical Center, Tisch Hospital Emergency Department; Assistant Professor of Emergency Medicine, New York University School of Medicine

Rahul Sharma, MD, MBA, FACEP is a member of the following medical societies: American College of Emergency Physicians, American Association for Physician Leadership, Phi Beta Kappa, Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Specialty Editor Board

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Received salary from Medscape for employment. for: Medscape.

Richard H Sinert, DO Professor of Emergency Medicine, Clinical Assistant Professor of Medicine, Research Director, State University of New York College of Medicine; Consulting Staff, Vice-Chair in Charge of Research, Department of Emergency Medicine, Kings County Hospital Center

Richard H Sinert, DO is a member of the following medical societies: American College of Physicians, Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Chief Editor

Gil Z Shlamovitz, MD, FACEP Associate Professor of Clinical Emergency Medicine, Keck School of Medicine of the University of Southern California; Chief Medical Information Officer, Keck Medicine of USC

Gil Z Shlamovitz, MD, FACEP is a member of the following medical societies: American College of Emergency Physicians, American Medical Informatics Association

Disclosure: Nothing to disclose.

Additional Contributors

Jerry R Balentine, DO, FACEP, FACOEP Vice President, Medical Affairs and Global Health, New York Institute of Technology; Professor of Emergency Medicine, New York Institute of Technology College of Osteopathic Medicine

Jerry R Balentine, DO, FACEP, FACOEP is a member of the following medical societies: American College of Emergency Physicians, New York Academy of Medicine, American College of Osteopathic Emergency Physicians, American Association for Physician Leadership, American Osteopathic Association

Disclosure: Nothing to disclose.

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Anatomy of the penis.
Physiologic phimosis versus pathologic phimosis.
Paraphimosis.
Dorsal slit procedure.
 
 
 
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