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Echocardiographic diagnosis of congenital double orifice mitral valve malformation: A case report

Double orifice mitral valve (DOMV) is a rare congenital valve malformation. Due to the insufficient understanding and awareness of its echocardiographic characteristics, there is a risk of misdiagnosis. Here, we report a case of echocardiographic diagnosis of congenital DOMV malformation in a 56‐year‐old male patient who visited our hospital for systematic physical examination, during which DOMV was not diagnosed. The following year, the patient visited our hospital again, and echocardiography showed two approximately circular orifices on the short axis view of the mitral valve. During diastole, two red Doppler blood flow signals were observed entering the left ventricle simultaneously. A small amount of blue Doppler signal revealed reflux into the left atrium during systole, leading to the diagnose of congenital heart disease with DOMV malformation, without other cardiac structural abnormality. Because the patient did not have obvious discomfort, he did not receive any special treatment and is regularly followed‐up.