Testing & Diagnosis for Cutis marmorata telangiectatica congeita (CMTC) in Children

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How is cutis marmorata telangiectatica congenita (CMTC)?

If you believe that your child may have CMTC, the first step to making a diagnosis is a complete medical history and thorough physical exam. That initial exam generally provides enough information to diagnose and confirm CMTC.

If your child’s doctor suspects another condition might also be present, she may recommend an imaging study such as the following:

  • X-ray—An x-ray is usually the first procedure performed; it gives your child’s doctor information regarding the need for further testing.
  • Computerized tomography (CT or CAT)—A CT scan shows detailed images of a specific area of your child’s body, including the bones, muscles, fat and organs. CT scans are more detailed than general x-rays.
  • Magnetic resonance imaging (MRI)—This high-resolution scan allows the doctor to detect any related abnormality in your child’s muscles, nerves, bones and blood vessels.

When should I consult a vascular anomalies specialist?

We advise consulting a vascular anomalies specialist in a few situations:

  • if your child’s birthmark seems to be growing
  • if your child has any pain or bleeding from the birthmark
  • if your child’s birthmark appears on her face
  • if your child has CMTC in conjunction with knee, hip or leg pain. This can be a sign that her legs are growing at different rates; and while she may not require treatment, it’s important to keep an eye on the condition.
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