Total anomalous pulmonary venous return (type III)

Case contributed by Dr Vincent Tatco

All pulmonary veins drain to a common venous channel, which descends and penetrates the diaphragm through the esophageal hiatus. Findings are compatible with type III (infracardiac) total anomalous pulmonary venous return.

Other findings:

  • Dextrocardia
  • Single ventricle
  • Right atrial isomerism
  • Atrial septal defect
  • Malposed great arteries
  • Right-sided aorta
  • Left SVC

Case Discussion

Total anomalous pulmonary venous return (TAPVR) occurs when all pulmonary veins fail to drain into the left atrium. Instead, all pulmonary veins drain anomalously into the systemic venous tributaries or into the right atrium. An interatrial communication (right-to-left shunt), either an atrial septal defect (ASD) or patent foramen ovale (PFO), is necessary for survival.

Depending on the drainage site of the pulmonary veins, the anomaly may be divided into the four types. The current case represents type III (infracardiac or infradiaphragmatic), which accounts for 13% of TAPVR cases. The common pulmonary venous sinus drains to the portal vein, ductus venosus, hepatic vein, or inferior vena cava (IVC).  The common pulmonary vein penetrates the diaphragm through the esophageal hiatus.  This type is virtually always accompanied by some degree of obstructed venous return.

PlayAdd to Share

Case information

rID: 40892
Case created: 6th Nov 2015
Last edited: 28th Dec 2016
Inclusion in quiz mode: Excluded

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.