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Cardiac involvement is very common in patients with systemic lupus erythematosus since 30 to 50% of all patients suffer from some sort of heart disease (Lahita, Textbook of rheumatology, 1997). Pericarditis is the most common form of involvement and occurs in 19 to 48% of patients (Lahita, Textbook of rheumatology, 1997). Pleural and/or pericardial pain can occur in any phase of the disease; however, pericardial effusion leading to cardiac tamponade is rare (Lahita, Textbook of rheumatology, 1997; Lee et al., Journal of Korean Medical Science 12(1):75-77, 1997). We report such a case, illustrated by echocardiography.

Paradoxical embolism is a rare cause of myocardial infarction. We present a case of a young man who was admitted to our hospital with an inferior myocardial infarction. Coronary arteriography showed a total distal occlusion of a posterolateral branch of the circumflex artery. Contrast-enhanced echocardiography showed a large atrial septal aneurysm with a patent foramen ovale and massive right-to-left shunting. No other sources of cardiac embolism could be identified. In this case, paradoxical embolism probably has resulted in myocardial infarction.