Congenital pulmonary venolobar syndrome

Congenital pulmonary venolobar syndrome is a condition comprised of a rare group of cardiac and pulmonary congenital abnormalities occurring variably in combination. The abnormalities include:

  • can present with shortness of breath and exercise intolerance due to the degree of left-to-right cardiopulmonary shunt causing pulmonary hypertension with right heart failure
  • recurent pulmonary infection/ lower lobe pneumonia and/or haemoptysis due to sequestration
  • frequently asymptomatic, picked up incidentally on plain chest radiograph or echocardiography 

Non-specific and may show:

  • an enlarged right heart
  • small right hemithorax with mediastinal shift to the right
  • right sided scimitar vein
  • recurrent lower lobe consolidation

May show:

  • right ventricular dilation and hypertrophy
  • anomolous pulmonary veins, eg. Scimitar, left vertical vein
  • sequestration with systemic arterial supply from upper abdominal aorta, coeliac trunk or SMA
  • small right lung with mediastinal shift to right
  • horseshoe lung - right lung extends posterior to the heart, contiguous with the left lung
  • can confirm anomalous pulmonary venous drainage
  • can identify any further congenital heart abnormalities eg. Sinus venosus ASD
  • can measure the degree of left to right shunt via phase contrast flow volumes
  • quantitation of right ventricular volumes and systolic function
  • identify systemic pulmonary arterial supply with differential pulmonary perfusion

Identification of the systemic arterial supply to the lung in these patients is important in the context of planning for surgical repair of the anomalous venous drainage, in order to avoid injury and bleeding from this vessel.

  • in patients with a large left to right shunt, at risk of developing pulmonary hypertension and right heart failure, corrective surgery is a consideration
  • surgical resection of the sequestration in cases of recurrent haemoptysis and/ or infection
  • conservative management with serial cMRI to monitor right heart progress

The term was initially coined by Dr Benjamin Felson.

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Article information

rID: 44469
Systems: Chest, Cardiac
Sections: Anatomy, Syndromes
Synonyms or Alternate Spellings:

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Cases and figures

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