TOPICS: Pericardium, pericarditis, viral, post-MI, dressler syndrome, uremia, SLE, neoplasm, chest pain, pleuritic, diffuse ST elevation, PR depression, friction rub, pericardial effusion, cardiac tamponade, constrictive pericarditis, kussmaul sign, pulsus paradoxus, pericardial knock, nsaids, colchicine, pericardiectomy, steroids