Noun, No-adjective
1. pyothorax
Wikipedia definition
2. Pleural empyemaPleural empyema (also known as a pyothorax or purulent pleuritis) is an accumulation of pus in the pleural cavity. Most pleural empyemas arise from a bacterial infection within the lung, often associated with parapneumonic effusions. There are three stages: exudative, fibrinopurulent and organizing. In the exudative stage, the pus accumulates. This is followed by the fibrinopurulent stage in which there is loculation of the pleural fluid (the creation of pus pockets).
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