Right atrial myxoma.
D000328:Adult; D001281:Atrial Fibrillation / Q000209:etiology; D009202:Cardiomyopathies / Q000150:complications; D004562:Electrocardiography; D006338:Heart Neoplasms; D006801:Humans; D008297:Male; D009232:Myxoma; D013902:Radiography, Thoracic