Pulmonary arteriovenous malformations in children

Insights

Pulmonary arteriovenous malformations (PAVMs) are a treatable cause of persistent cyanosis in children. Surgical resection of PAVMs in pediatric patients, particularly those with Rendu-Osler-Weber syndrome, offers a curative outcome.

Area of Science:

  • Cardiology
  • Pediatric Surgery
  • Genetics

Background:

  • Pulmonary arteriovenous malformations (PAVMs) are abnormal vascular connections in the lungs.
  • PAVMs can lead to life-threatening hypoxemia, presenting as persistent cyanosis in children.
  • These malformations are often associated with hereditary hemorrhagic telangiectasia, also known as Rendu-Osler-Weber syndrome.

Observation:

  • Three pediatric patients, all female and aged 2-4 years, presented with symptoms suggestive of PAVMs.
  • All patients had a family history of Rendu-Osler-Weber syndrome.
  • Pulmonary angiography confirmed the diagnosis of PAVMs in all three cases.

Findings:

  • The PAVMs were located in various lobes, including the left lower lobe, right upper lobe, and right middle and lower lobes.
  • All three patients underwent successful and uneventful surgical resection of the affected lung segments.
  • Post-operative recovery was uncomplicated for all patients.

Implications:

  • Surgical resection is an effective treatment for pediatric pulmonary arteriovenous malformations.
  • Early diagnosis and intervention can prevent severe complications associated with PAVMs.
  • Genetic counseling and screening for Rendu-Osler-Weber syndrome are important in affected families.