unroofed coronary sinus

unroofed coronary sinus

congenital complete or partial absence of the partition dividing the coronary sinus from the left atrium, allowing the shunting of blood from the left atrium through the coronary sinus into the right atrium.
References in periodicals archive ?
Some congenital cardiac abnormalities such as atrial or ventricular septal defect and unroofed coronary sinus may accompany the persistent left SVC, resulting in paradoxical embolism (1, 2).
Persistent left SVC is relatively more prevalent compared with the left IVC and may result in paradoxical embolism due to accompanying lesions such as ASD, unroofed coronary sinus and its directly drainage into the left atrium (1).