Beckwith-Wiedemann syndrome

Beckwith-Wiedemann syndrome is a congenital (present from birth) growth disorder that causes large body size, large organs, and other symptoms.

Causes of Beckwith-Wiedemann syndrome

The cause of Beckwith-Wiedemann syndrome is unknown, but it may be genetic. Most cases are associated with a defect in chromosome number 11.

Infancy can be a critical period because of low blood sugar (hypoglycemia), omphalocele (when present), and an increased rate of tumor development. Wilm's tumor and adrenal carcinoma are the most common tumor's in patients with this syndrome.

Beckwith-Wiedemann syndrome Symptoms

• Abdominal wall defect: umbilical hernia or omphalocele
• Creases in ear lobes
• Enlargement of some organs and tissues
• External ear (pinna) abnormalities and low-set ears
• Large size for a newborn (large for gestational age)
• Large, prominent eyes
• Large tongue, sometimes protruding
• Lethargy
• Low blood sugar (hypoglycemia)
• Mild microcephaly
• Poor feeding
• Separated abdominal muscles (diastasis recti)
• Seizures
• Undescended testicles (cryptorchidism)

Tests and Exams

The signs of Beckwith-Wiedemann syndrome include:

• A ridge in the forehead caused by premature closure of the bones (metopic ridge)
• Enlarged fontanelle (soft spot)
• Enlarged kidneys, liver, and spleen
• Large size (90th percentile)
• Low blood sugar (hypoglycemia)

Tests for Beckwith-Wiedemann syndrome include:

• Blood tests for low sugar and other abnormalities
• Chromosomal studies for abnormalities in chromosome 11
• MRI or CT scan of the abdomen
• Ultrasound of the abdomen
• X-ray of the abdomen
• X-ray of the long bones

Treatment of Beckwith-Wiedemann syndrome

Infants with low blood sugar may be treated fluids given through a vein ( intravenous solutions).

Defects in the abdominal wall may need to be repaired. The child must be watched closely for the development of tumors.

Prognosis (Outlook)

Children with Beckwith-Wiedemann syndrome who survive infancy do well, although no long-term follow-up information is available. Mental development appears to be normal to very slightly decreased. Swelling of the tongue can cause problems with feeding and sleeping.

Potential Complications

• Development of tumors
• Feeding problems
• Hypoglycemia
• Respiratory difficulties from obstruction due to large tongue
• Seizures

When to Contact a Health Professional

If you have a child with Beckwith-Wiedemann syndrome and worrisome symptoms develop, call your pediatrician immediately.

Prevention of Beckwith-Wiedemann syndrome

There is no known prevention for Beckwith-Wiedemann syndrome. Genetic counseling may be of value for families who would like to have additional children.

Cohen P, Shim M. Hyperpituitarism, tall stature, and overgrowth syndromes. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 561.

Beckwith-Wiedemann syndrome	Metopic ridge

Review Date: 5/1/2011
Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

_{Do not use this information for medical emergencies - Call 911. This information should not be used for the diagnosis or treatment of any medical condition. A licensed medical practitioner should always be consulted for diagnosis and treatment of any and all medical conditions. Links to other websites do not constitute endorsements and are provided for information only. Any duplication or distribution of this information is strictly prohibited.
Copyright 2011 A.D.A.M., Inc.}