Severe mitral regurgitation caused by perivalvular abnormal communication of the mitral valve due to blunt chest trauma.

Perivalvular leaks are usually caused by suture interruption in prosthetic valves or infective endocarditis. Traumatic mitral annular dehiscence is a very uncommon event. We present a rare case of severe mitral regurgitation secondary to perivalvular abnormal communication in a 35-year-old man with a history of blunt chest trauma. He presented with symptoms of cough and chest tightness for 3 months. Preoperative two-dimensional and real time three-dimensional transesophageal echocardiography clearly showed the position and size of the perivalvular abnormal communication and the incident damage of the left ventricular wall. The patient finally underwent successful surgical repair.