pleural empyema. normal lung and lungs after accumulation of pus

pleural empyema lung pus cavity hemothorax inflammation infection sepsis healthy haemorrhagic effusion thoracic injury pulmonary hemorrhage embolism treatment surgery medical procedure disease care emergency diagnosis collapsed abnormal aspiration symptom medicine anatomy bacterial accumulation inflammatory response diagnostic antibiotic therapy complications hydropneumothorax respiratory distress breath normal lungs vector empyema