| empyema of the pericardium | An accumulation of pus in the pericardial sac. Synonym: empyema of the pericardium. (05 Mar 2000) |
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| empyema, pleural | Suppurative inflammation of the pleural space. (12 Dec 1998) |
| empyema, subdural | An intracranial suppurative process between the dura and the arachnoid. The infection gains entrance to the subdural space from the frontal and ethmoid sinuses, the middle ear, and the mastoid cells. (12 Dec 1998) |
| empyema tube | A rubber drainage tube, piercing a sheet rubber shield, passed through the chest wall in order to drain an empyema. (05 Mar 2000) |
| empyema, tuberculous | Empyema due to mycobacterium tuberculosis. (12 Dec 1998) |