A swinging heart as complication of systemic lupus erythematosus.

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.