1. Affects alveoli which become inflamed and flooded with
fluid. Caused by infection and in choke caused as a result of gastro-oesophagealreflux which
may enter the trachea. May also result from chemical or physical irritation of the lungs or as
the result of another medical illness, such as lung cancer. The most common cause is
bacteria pneumonia, caused by the bacteria Streptococcus pneumoniae. People with
infectious pneumonia often have a cough that produces greenish or yellow sputum and a
fever. Dyspnoea is also common, as is chest pain. Possible hemoptysis (coughing up blood,)
experience headaches.A - Normal lung x-ray B- Chest X-ray with extensive pneumonia in
right lung.
This chest x-ray in a patient with a cough and fever showed a white area
(yellow circle) in the right lower lung