"may involve pleura and chest wall leading to empyema necessitans."
"pleural effusions - relatively common feature ~ 50% 5"
"Thoracic actinomycosis refers to an uncommon indolent infection caused principally by the genus Actinomyces (higher prokaryotic bacteria belonging to the family Actinomyceataceae)."
"Thoracic involvement usually results from aspiration of oropharyngeal or gastrointestinal secretions into the respiratory tract. Actinomyces israelii can be commonly found in the oral cavity (especially in those with poor oral hygiene or from extension of cervicofacial infections), and is thought to be responsible for the majority of pulmonary actinomyces infections. Actinomyces naeslundii is also present in normal oral flora, although it much less commonly associated with lung disease."
"The imaging differential diagnosis can be wide ranging ranging on the type of manifestations. Therefore it may be more meaningful so consider a differential for each radiographic feature."
Expected headings
"Distribution"