Dilated Coronary Sinus without LSVC Due to Direct Tricuspid Regurgitation Jet

We present the case of a child with a dilated coronary sinus (CS) in the absence of a persistent left superior vena cava (LSVC) and without anomalous pulmonary venous drainage into the CS. No tricuspid stenosis or significant right atrial hypertension was noted. Echocardiography demonstrated that the direct impact of the tricuspid regurgitation (TR) jet onto the CS orifice accounted for the marked CS dilatation. This case highlights an unusual mechanism of CS enlargement in pediatric patients.

کلیدواژه ها:

Coronary sinus dilatation ، tricuspid regurgitation ، LSVC ، pediatric cardiology ، echocardiography