Total Anomalous Pulmonary Venous Return

Obstructed Pulmonary Vein

* Pulmonary venous htn and pulmonary arterial htn
* Pulmonary edema
* Diminished pulmonary return to heart resulting in low cardiac output

Radiographic Features:


Nonobstructed TAPVC

* Snowman Heart in supracardiac types; the supracardiac shadow results from dilated right SVC, vertical vein, and innominate vein
* Snowman configuration not seen with other types
* Increased pulmonary vascularity

Obstructed TAPVC

* Pulmonary edema
* Small heart