Lung abscess is defined as a circumscribed area of pus or necrotic debris in lung parenchima, which leads to a cavity, and after formation of bronchopulmonary fistula, an air-fluid level inside the cavity.
Lung abscess is in the group of lung infections such as lung gangrene and necrotizing pneumonia which is characterized with multiple abscesses. Lung abscess can be divided on acute (less than 6 weeks) and chronic (more than 6 weeks).
Chronic Lung abscess
Chronic lung abscess is usually irregular star-like shape with well-defined surrounding to lung parenchyma, fulfilled with grayish line or thick detritus.
Conditions contributing to lung abscess:
In the post-antibiotic era pattern of frequency is changing. In older studies anaerobes were found in up to 90% cases but they are much less frequent now.
Symptoms of a lung abscess commonly come slowly over weeks. They may include:
The following tests are used for the diagnosis of Chronic lung abscess:
Depending on the specific findings, rate residuals as interstitial lung disease, restrictive lung disease, or, when obstructive lung disease is the major residual, as chronic bronchitis (DC 6600).
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