Three-dimensional echocardiographic pictures of isolated double-orifice mitral valve.

We present a case of a 12-year-old boy with a rare form of cardiac anomaly, isolated double-orifice mitral valve. He was referred to our hospital at 1.5 years old because of heart murmur. Two-dimensional echocardiography showed double-orifice mitral valve without any associated cardiac anomalies. He has been followed carefully without any medication for 11 years. He has had no symptoms and an excellent natural course thus far.