PAVMs occur more frequently in hereditary hemorrhagic telangiectasia 1 (HHT1) than HHT2 [MISCELLANEOUS] Definite diagnosis if 3/4 criteria present (epistaxis, telangiectasia, visceral lesion, or family history) [MISCELLANEOUS] Cutaneous telangiectases often not evident until 20-30 years of age [MISCELLANEOUS] Genetic heterogeneity [MISCELLANEOUS] Caused by mutation in the endoglin gene (ENG, 131195.0001) [MOLECULAR BASIS] Incidence 1 in 5,000-8,000 [MISCELLANEOUS]
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