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Basal cell nevus syndrome - close-up of palm
Basal cell nevus syndrome - close-up of palm


Basal cell nevus syndrome - plantar pits
Basal cell nevus syndrome - plantar pits


Basal cell nevus syndrome - face and hand
Basal cell nevus syndrome - face and hand


Basal cell nevus syndrome
Basal cell nevus syndrome


Basal cell nevus syndrome - face
Basal cell nevus syndrome - face


Basal cell nevus syndrome

Definition:

Basal cell nevus syndrome is a group of defects, passed down through families, that involve the skin, nervous system, eyes, endocrine glands, and bones.

The condition causes an unusual facial appearance and a higher risk of skin cancers.



Alternative Names:

Nevoid basal cell carcinoma syndrome; Gorlin syndrome



Causes, incidence, and risk factors:

Basal cell nevus syndrome is a rare genetic condition. The gene linked to the syndrome is known as PTCH ("patched").

The gene is passed down through families as an autosomal dominant trait. That means you will get the syndrome if either parent passes the gene down to you.



Symptoms:

The hallmark of this disorder is the appearance of a type of skin cancer known as basal cell carcinoma at or around puberty.

Symptoms include:

  • Broad nose
  • Cleft palate
  • Heavy, protruding brow
  • Jaw that sticks out (in some cases)
  • Wide-set eyes

The condition may affect the nervous system and lead to:

The condition also leads to bone defects, including:



Signs and tests:

There may be a family history of basal cell nevus syndrome and a past history of basal cell skin cancers.

Tests may reveal:

  • Brain tumors
  • Cysts in the jaw, which can lead to abnormal tooth development or jaw fractures
  • Defects in the colored part (iris) or lens of the eye
  • Head swelling due to fluid on the brain (hydrocephalus)
  • Rib abnormalities

Tests that may be done include:

  • Echocardiogram of the heart
  • Genetic testing (in some patients)
  • MRI of the brain
  • Skin biopsy of tumors
  • X-rays of the bones, teeth, and skull
  • Ultrasound to check for ovarian tumors


Treatment:

It is important to get examined by a dermatologist often, so that skin cancers may be treated while they are still small.

Persons with this condition may also be seen and treated by several other specialists, depending on what part of the body is affected. For example, a cancer specialist (oncologist) may treat tumors in the body, and an orthopedic surgeon may help treat bone problems.



Support Groups:



Expectations (prognosis):

Frequent follow-up with a variety of doctors is important to having a good outcome.



Complications:
  • Blindness
  • Brain tumor
  • Deafness
  • Fractures
  • Ovarian tumors
  • Skin damage and severe scarring due to skin cancers


Calling your health care provider:

Call for an appointment with your health care provider if:

  • You or any family members have basal cell nevus syndrome, especially if you are planning to have a child.
  • You have a child who has symptoms of this condition.


Prevention:

Couples with a family history of this syndrome might consider genetic counseling before becoming pregnant.

Avoiding the sun and using sunscreen are necessary to help prevent new basal cell skin cancers.

Avoid ionizing radiation such as x-rays. People with this condition are very sensitive to radiation, and exposure can lead to skin cancers.



References:

Morelli JG. Tumors of the skin. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, Pa: Saunders Elsevier;2011:chap 662.




Review Date: 7/11/2012
Reviewed By: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.

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 endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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