Not much: Pneumonia is usually used to refer to an infection in the clusters of breathing sacs in the lung. I suppose you could say a bacerial infection of the entry of the lung (tracheitis) could be defined better that way but I have never used it that way.To me they would seem to mean the same thing.
Answered 3/26/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
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