Ruptured mitral valve aneurysm: an uncommon cause of acute dyspnoea.

The mitral valve aneurysm is a rare disease that is usually induced by infective endocarditis. While the mechanism of the development of this lesion is unclear, complications such as perforation can occur and lead to significant mitral regurgitation. We describe a patient presented with ruptured aneurysm of anterior mitral leaflet resulting in acute severe mitral regurgitation that was confirmed by transthoracic and transesophageal echocardiography. Early detection and prompt intervention are important to prevent the complications of valvular aneurysms, which include rupture, embolism, and endocarditis. This report emphasizes the role of echocardiography in evaluating the mitral valve aneurysms and its complications.