Intracardiac masses present an important problem in cardiology. Echocardiography became a main non-invasive diagnostic method in identifying these abnormalities. Most often there are thrombuses, less often - vegetations in course of infective endocarditis, and rarely - tumours or congenital abnormalities. This case report presents difficulties in diagnosing intracardiac mass in a 70-year-old female presenting with atypical chest pain.