Birincioglu Cl B H K A . A clinical dilemma : cardiac and pericardiac echinococcosis [ J ] . Ann Thorac Surg , 1999 , 68 ( 1290-1294 ) .Cardiac echinococcosis : recurrent intramyocardial-extracardiac hydatid cysts with pericardial protrusion [ J ] . Circ ......