1、Pyopericardium is a condition characterized by the accumulation of pus in the pericardial sac.
心包粘连是一种特征性的病状，其特点是脓液在心包腔内积聚。

2、Surgery may be necessary to treat pyopericardium and drain the pus from the pericardial sac.
手术可能是治疗心包粘连并排除心包腔内脓液的必要手段。