[Table/Fig-19]:

Cardiac tapvc.

cardiac tapvc	Pathway of pulmonary venous return: Common pulmonary venous channel coronary sinus RA. All 4 pulmonary veins drain separately into RA.
Incidence [13]	Accounts for 20% of TAPVC patients.
Association	ASD/PFO
Syndromes
Imaging features Plain	Moderate cardiomegaly (RA/RV enlargement)	Pulmonary plethora
Imaging features specific	Echo dilated coronary sinus- first clue to this condition MRI adequately demonstrates the anomalous pathway with functional assessment (Qp:Qs) CT
Management [13]	TAPVC to RA: excision of atrial septum and redirection of pulmonary venous return to LA through a patch TAPVC to coronary sinus: Unroofing of coronary sinus (incision in anterior wall of coronary sinus for communication between CS and LA) with closure of ostium of CS and ASD