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A.D.A.M. Medical Encyclopedia [Internet]. Atlanta (GA): A.D.A.M.; 2013.

A.D.A.M. Medical Encyclopedia.

Peutz-Jeghers syndrome

PJS

Last reviewed: November 22, 2011.

Peutz-Jeghers syndrome (PJS) is a disorder often passed down through families (inherited) in which the person develops intestinal polyps and is at a significantly higher risk for developing certain cancers.

Causes, incidence, and risk factors

It is unknown how many people are affected by PJS. However, the National Institutes of Health estimates that it affects about 1 in 25,000 to 300,000 births.

There are two types of PJS:

  • Familial PJS is due to a mutation in a gene called STK11. The genetic defect is passed down (inherited) through families as an autosomal dominant trait. That means if one of your parents has this type of PJS, you have a 50:50 chance of inheriting the bad gene and having the disease.
  • Sporadic PJS is not passed down through families and appears unrelated to the STK11 gene mutation.

Symptoms

  • Brownish or bluish-gray pigmented spots on the lips, gums, inner lining of the mouth, and skin
  • Cramping pain in the belly area
  • Dark freckles on and around the lips of a newborn
  • Blood in the stool that can be seen with the naked eye (occasionally)
  • Vomiting

Signs and tests

The polyps develop mainly in the small intestine, but also in the colon. A colonoscopy will show colon polyps. The small intestine is evaluated with either a barium x-ray (small bowel series) or a small camera that is swallowed and then take multiple pictures as it travels through the small bowel (capsule endoscopy).

Additional exams may show:

Laboratory tests may include:

Treatment

Surgery may be needed to remove polyps that cause long-term problems. Iron supplements help counteract blood loss.

Persons with this condition should be monitored by a health care provider and be checked periodically for cancerous polyp changes.

Expectations (prognosis)

There may be a significant risk of these polyps becoming cancerous. Some studies link PJS and cancers of the gastrointestinal tract, lung, breast, uterus, and ovaries.

Complications

  • Intussusception (part of the intestine folds in on itself)
  • Polyps that lead to cancer
  • Sex cord tumors

Calling your health care provider

Call for an appointment with your health care provider if you or your baby have symptoms of this condition. Severe abdominal pain may be a sign of an emergency condition such as intussusception.

Prevention

Genetic counseling is recommended if you are planning to have children and have a family history of this condition.

References

  1. Goldman L, Ausiello D. Cecil Textbook of Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007.

Review Date: 11/22/2011.

Reviewed by: Todd Eisner, MD, Private practice specializing in Gastroenterology, Boca Raton, FL, Clinical Instructor, Florida Atlantic University School of Medicine. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only — they do not constitute endorsementscof those other sites. © 1997–2011 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

Copyright © 2013, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only — they do not constitute endorsementscof those other sites. © 1997–2011 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

Copyright © 2013, A.D.A.M., Inc.

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