AJR teaching file: a right paracardiac mass in a patient with a history of coronary artery bypass grafting.

摘要

An asymptomatic 57-year-old man presented with a right paracardiac opacity found incidentally on chest radiography. Thoracic CT and subsequent cardiac MRI were performed for further characterization of the abnormality.The patient's medical history was significant for severe generalized atherosclerotic disease with coronary artery disease, myocardial infarct, and three-vessel coronary bypass grafting 9 years before presentation. The patient suffered from multiple comorbidities including abdominal aortic aneurysm and chronic renal failure. Therefore, the patient did not receive contrast material for CT or MRI to avoid worsening of renal function secondary to iodinated contrast material and to avoid the risk of nephrogenic systemic fibrosis secondary to gadolinium administration.