We present the case of a 75-year-old man with incidental finding of a left ventricular false chamber at echocardiography. A multimodality imaging approach including also transesophageal echocardiography and cardiac magnetic resonance imaging allowed to better characterize the lesion and identify it as a pseudoaneurysm. Surgery showed an infective aetiology, which is rare, due to the finding of a large abscess in the cavity.