Total Anomalous Pulmonary Venous Return

Types of TAPVR:
Supracardiac (50%)

* Infrequently associated with obstruction
* Portal veins connect to a left vertical vein or azygous vein
Cardiac (30%)

* Pulmonary veins connect to the right atrium or coronary sinus

Infracardiac (15%)

* Pulmonary veins connect to a vein below the diaphragm

Mixed (5%)