Spontaneous disappearance of a false aneurysm after iatrogenic ruptured ventricle

We report the case of a 64-year-old woman who had an atypical subendocardial aneurysm, a space between the internal patch, which was used for the repair of a left ventricular rupture after mitral valve replacement, and myocardium, which filled with blood during the diastole phase. During the follow-up period, the aneurysm spontaneously disappeared. This case endorses combining internal and external approaches to repair a left ventricular rupture after mitral valve replacement.