Indication

Bacteroides lung abscess

A Bacteroides lung abscess is a localized, cavitary, suppurative necrosis of the pulmonary parenchyma caused by infection with anaerobic Gram-negative bacilli of the genus *Bacteroides*. Read more about Bacteroides lung abscess

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About Bacteroides lung abscess.

A Bacteroides lung abscess is a localized, cavitary, suppurative necrosis of the pulmonary parenchyma caused by infection with anaerobic Gram-negative bacilli of the genus *Bacteroides*.

It predominantly affects adults with risk factors for microaspiration of oral or gingival secretions, such as altered consciousness, severe periodontal disease, alcohol use disorder, or neuromuscular dysphagia.

Pathophysiologically, aspirated oral commensals trigger progressive parenchymal tissue destruction and central liquefaction, typically resulting in an indolent presentation marked by low-grade fever, weight loss, and purulent, often foul-smelling sputum.

Radiographically, it is characterized by single or multiple thick-walled cavities that frequently demonstrate air-fluid levels once communication with the bronchial tree is established.

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