Functional classification dictates type of repair in "complex" mitral insufficiency: Application to a case of a hammock mitral valve in an adult patient.

T he hammock mitral valve is a rare congenital abnormality resulting in mitral stenosis, mitral regurgitation, or both. Although sometimes technically challenging, the repair of such lesion is possible and should be preferred to mitral valve replacement. We describe here for the first time the case of an adult patient who underwent mitral valve repair for severe mitral regurgitation related to a hammock mitral valve malformation.