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Hereditary Haemorrhagic Telangiectasia
Inheritance patterns and prenatal diagnnosis
Inheritance patterns
Autosomal dominant. The earliest sign of HHT in children is usually nose bleeds, but nose bleeds may not develop until middle age. Because HHT may not become apparent until late in life, we are unable to say that younger members of a family are definitely unaffected. It is sensible for their medical records to include the fact that they have a parent with HHT, and for them to be screened for lung involvement.
Prenatal diagnosis
This is possible in families where a genetic change has been identified.
Background
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