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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Aspiration of infective material is the most common cause of a lung abscess.

It is most common in situations in which the cough reflexes are depressed - for example:

  • acute alcoholism
  • coma
  • anaesthesia
  • sinusitis
  • oral or pharyngeal sepsis
  • debilitation

The aspiration of gastric contents is particularly severe as it introduces acid in addition to organisms from the mouth.

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