Abstract
We reported a 43-year-old male case of abnormality of mitral valve, that was found by echocardiogram 2 months after the start of antibiotic therapy for infectious endocarditis (IE). Congestive heart failure was also getting worse, and double valve replacement was performed. Resected anterior mitral leaflet showed a saccular formation 1.5×1.0×1.0cm in size with perforation of 0.5cm in diameter at the center. In microscopic study, true aneurysm of mitral valve was diagnosed.
Aneurysm of mitral valve occurs most commonly in association with IE. Among domestic 16 cases, nine were associated with IE. In this point of view, a possible relationship has been suggested between healing process from IE using antibiotics and the pathogenesis of aneurysm. And our case also appears to develop aneurysm during antibiotic therapy. We could not confirm the diagnosis because of atypical view in echocardiogram, but repetitious echocardiogram during antibiotics therapy is necessary to detect aneurysm.
