Authors present a case of a 72 years old woman with an abnormally big left ventricular pseudoaneurysm as a consequence of a rupture of the left ventricular wall during myocardial infarction. Pseudoaneurysm threatens its carrier with both sudden death as a result of the rupture and a progressing heart failure. The patient mentioned has undergone an infero-lateral myocardial infarction complicated with beginning cardiogenic shock in July 2001. Based on coronarography examination which proved only peripheral stenoses in coronary bed a conservative procedure was indicated. In June 2002 the patient was admitted to a hospital for progressive dyspnoea, nonspecific chest and epigastric pain, and dyspeptic complaints. Transtoracal echocardiography examination proved a large pseudoaneurysm coming from periapical bottom wall of the left ventricle. Diagnosis was further confirmed and specified by ventriculography and the patient was indicated for surgery. Authors present a range of clinical signs of pseudoaneurysm, an approach to an examination, differential diagnostics and treatment procedure in patients with this unusual complication.

        Key words: Left ventricular pseudoaneurysm - Myocardial rupture