TITLE: Pyopneumopericarditis secondary to entero-pericardial fistula: A rare etiology of dyspneaAUTHORS: Shaun M. Condon II 1, Jacob E. Tuttle 1, Jo-Ann Rammal 1, Tyler Andrews DO 2, Connor M. Bunch MD1,2, Saadeddine Haidar MD 1, Joseph B. Miller, MD 1,2