Malformações arteriovenosas pulmonares na síndrome de Rendu-Osler-Weber
Pulmonary arteriovenous malformations in Rendu-Osler-Weber syndrome
Cristiane Ferreira de Araújo-Gomes; Carlos Eduardo Virgini-Magalhães; Leonardo Silveira de Castro; Eduardo de Oliveira Rodrigues Neto; Alex Antunes Bezerra; Monica Rochedo Mayall; Cristina Ribeiro Riguetti-Pinto; Felipe Borges Fagundes
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Abstract
Rendu-Osler-Weber syndrome, also known as hereditary hemorrhagic telangiectasia, is an autosomal dominant hereditary disorder. It is characterized by presence of multiple arteriovenous malformations (AVMs) and telangiectasias. This article reports two cases of patients with Rendu-Osler-Weber syndrome who had pulmonary AVMs and underwent successful endovascular treatment. A brief review of the literature shows that up to 50% of patients with the syndrome have pulmonary AVMs and there is usually a positive family history in these patients. These pulmonary AVMs are multiple in 30% of cases and are associated with the most severe disease complications. Most patients are asymptomatic, even in the presence of AVMs with right-left shunts. When these shunts exceed 25% of the total blood volume, dyspnea, cyanosis, digital clubbing, and extracardiac murmurs may occur. Endovascular treatment is safe and offers control of complications from hereditary hemorrhagic telangiectasia and is currently the treatment of choice for these lesions.
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References
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Submitted date:
09/06/2023
Accepted date:
12/11/2023
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