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Klippel-Trenaunay syndrome

Klippel-Trenaunay-Weber syndrome; KTS; Angio-osteohypertrophy; Hemangiectasia hypertrophicans; Nevus verucosus hypertrophicans; Capillary-lymphatico-venous malformation (CLVM)

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Klippel-Trenaunay syndrome (KTS) is a rare condition that is typically present at birth. The syndrome often involves port wine stains, excess growth of bones and soft tissue, and varicose veins.

Causes

Most cases of KTS occur for no clear reason. However, a few cases are thought to be passed down through families (inherited).

Symptoms

Symptoms of KTS include:

  • Many port wine stains or other blood vessel problems, including dark spots on the skin
  • Varicose veins (may be seen in early infancy, but are more likely to be seen later in childhood or adolescence)
  • Unstable gait due to limb-length difference (involved limb is longer)
  • Bone, vein, or nerve pain

Other possible symptoms:

  • Bleeding from the rectum
  • Blood in the urine

Exams and Tests

People with this condition may have excessive growth of bones and soft tissue. This occurs most commonly in the legs, but it also may affect the arms, face, head, or internal organs.

Various imaging techniques can be used to find out any change in body structures due to this condition. These also help in deciding the plan of treatment. These may include:

Ultrasound during pregnancy may help in diagnosing the condition.

Support Groups

The following organizations provide further information on KTS:

Outlook (Prognosis)

Most people with KTS do well, although the condition may affect their appearance. Some people have psychological problems from the condition.

There can sometimes be abnormal blood vessels in the abdomen, which may need to be evaluated.

References

Greene AK, Mulliken JB. Vascular anomalies. In: Rodriguez ED, Losee JE, Neligan PC, eds. Plastic Surgery: Volume 3: Craniofacial, Head and Neck Surgery and Pediatric Plastic Surgery. 4th ed. Philadelphia, PA: Elsevier; 2018:chap 39.

Longman RE. Klippel-Trénaunay-Weber syndrome. In: Copel JA, D'Alton ME, Feltovich H, et al, eds. Obstetric Imaging. 2nd ed. Philadelphia, PA: Elsevier; 2018:chap 131.

McCormick AA, Grundwaldt LJ. Vascular anomalies. In: Zitelli BJ, McIntire SC, Nowalk AJ, eds. Zitelli and Davis' Atlas of Pediatric Physical Diagnosis. 7th ed. Philadelphia, PA: Elsevier; 2018:chap 10.

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        Review Date: 10/26/2017

        Reviewed By: Anna C. Edens Hurst, MD, MS, Assistant Professor in Medical Genetics, The University of Alabama at Birmingham, Birmingham, AL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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