Jeune Syndrome

Asphyxiating thoracic dystrophy

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Jeune syndrome, also known as asphyxiating thoracic dystrophy, is an inherited form of dwarfism which produces short limbs, a small chest, and kidney problems. Its chief manifestation, however, is respiratory distress due to the small rib cage. It is estimated to occur in 1 per 100,000-130,000 live births, and affects people of all ethnic backgrounds.

Symptoms

Individuals with Jeune syndrome have some physical characteristics in common:

  • A long, narrow, and abnormally small chest with reduced lung capacity
  • Short arms and legs compared to trunk and overall small stature (short- limbed dwarfism)
  • Kidney lesions which may lead to kidney failure

Other symptoms which individuals with Jeune syndrome may have are:

  • Intestinal malabsorption
  • Retinal degeneration
  • Liver problems
  • Heart and circulatory problems

Often, severe respiratory distress appears during early infancy. In other cases breathing problems are less severe, and abnormalities of the kidneys or gastrointestinal system may predominate.

Diagnosis

Jeune syndrome is usually diagnosed at birth based on the chest deformity and short-limbed dwarfism. Severely affected infants will have respiratory distress. Milder cases may be diagnosed by chest x-ray.

Treatment

The most important area of medical care for an individuals with Jeune syndrome is preventing and treating respiratory infections.

Unfortunately, many infants and children with the syndrome die from respiratory failure brought on by a very small chest and repeated respiratory infections.

In some cases, enlarging the rib cage with chest reconstructive surgery has been successful in relieving respiratory distress. This surgery is difficult and risky, and has been reserved for children with severe breathing difficulties.

Individuals with Jeune syndrome may also develop high blood pressure from kidney disease. Their kidneys may eventually fail, which is treated by dialysis or kidney transplantation.

Many individuals with Jeune syndrome who survive infancy eventually begin to have normal chest development.

Genetic Counseling

Jeune syndrome is an inherited autosomal recessive disorder. This means that both parents must be carriers of the defective gene in order for a child to inherit the syndrome. Thus, if parents give birth to an affected child, this means both are carriers, and that each subsequent child they have has a 25% chance of inheriting the syndrome.

Sources:

Chen, H. (2004). Asphyxiating thoracic dystrophy (Jeune syndrome). eMedicine, accessed at http://www.emedicine.com/ped/topc1224.htm

Sarimurat N, Elçioğlu N, Tekant GT, et al. Jeune's asphyxiating thoracic dystrophy of the newborn. Eur J Pediatr Surg 1998; 8:100.

Edited by Richard N. Fogoros, MD

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