Osteogenesis imperfecta with mitral insufficiency due to ballooning of the mitral valve. A case report.

A further case of osteogenesis imperfecta with valvular heart disease is added to the 12 already reported in the literature. The presence of a dilated mitral annulus and a ballooned mitral leaflet in this case together with the findings reported in the literature leave little doubt as to the relationship between the valvular lesion and the underlying connective tissue disorder.