Pulmonary Venous Confluence
The junction where pulmonary veins meet before connecting to the systemic circulation in certain congenital anomalies.
Full Definition
Pulmonary venous confluence refers to the anatomical structure where pulmonary veins converge before their connection to the systemic circulation, most commonly seen in total anomalous pulmonary venous return (TAPVR). The confluence can be located behind the left atrium and may connect to various systemic structures including the coronary sinus, superior vena cava, or portal circulation. The size and location of the confluence affects surgical repair options and outcomes. Stenosis at the confluence or at individual pulmonary vein ostia represents a significant complication requiring specialized intervention.
Usage
Usage note: Specify location relative to cardiac structures and drainage pattern when editing anatomical descriptions.
In Context
- "CT angiography revealed a dilated pulmonary venous confluence posterior to the left atrium draining to the coronary sinus." — radiology report
- "Surgical repair involved creating a wide anastomosis between the pulmonary venous confluence and the left atrium." — operative report