Pneumonia is an inflammation or infection of the lungs.
The lungs' air sacs fill with pus, mucus, and other liquid and can not function properly. Oxygen can not reach the blood. If there is insufficient oxygen in the blood, body cells can not function properly and may die.
Lobar pneumonia affects a section (lobe) of a lung. Bronchial pneumonia (or bronchopneumonia) affects patches throughout both lungs.
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| Lobar Pneumonia | Bronchial Pneumonia |
What causes pneumonia?
Pneumonia is not a single disease. It can have over thirty different causes.
