Myocarditis in Mixed Connective Tissue Disease: A Case Report

Myocarditis is a serious manifestation of systemic lupus erythematosus. It is reported that 5-10% of the patients present symptomatic myocarditis. However, myocarditis in mixed connective tissue disease is uncommon. Only a few cases with mixed connective tissue disease patients who presented symptomatic myocarditis were reported. We herein describe a patient with mixed connective tissue disease who developed acute myocarditis and responded rapidly to steroids. Physician should be aware of myocarditis as one of the serious complications of mixed connective tissue disease.