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Traumatic aortic-left ventricle tunnel through interventricular septum was particularly a rare event that has never previously been described. A 58-year-old male, with a history of blunt thoracic trauma caused by falling from height, was admitted to our institute for effort dyspnea. Chest computed tomography scan showed subaortic interventricular septal lumen communicating with coronary sinus and left ventricular outflow tract (LVOT). Transthoracic echocardiography revealed a shuttle flow from coronary sinus to LVOT bypassing aortic annulus during diastole. Operation examination found partial aortic annulus avulsion outside right coronary cusp involving superior interventricular septum dissection forming a tunnel breakthrough into left ventricular outflow tract. Both aortic orifice and LVOT orifice of the tunnel were closed with running Prolene suture and right coronary cusp annulus was fastened to aortic root with intermittent mattress suture. The postoperative course was uneventful. Echocardiography confirmed complete closure of the tunnel with residual trivial to mild aortic regurgitation during 1-month follow-up.

Partial aortic annulus avulsion and formation of aortic-left ventricle tunnel through interventricular septum after blunt cardiac trauma