Thoracic actinomycosis: CT features with histopathologic correlation

Sung Kim Tae, Joungho Han, Won Jung Koh, Chol Choi Jae, Jin Chung Myung, Hyun Lee Ju, Shine Shim Sung, Semin Chong

Research output: Contribution to journalArticlepeer-review

75 Scopus citations


OBJECTIVE. Thoracic actinomycosis is a chronic suppurative pulmonary or endobronchial infection caused by Actinomyces israelii, a gram-positive anaerobic organism. We present the CT features of thoracic actinomycosis with histopathologic correlation. CONCLUSION. The typical CT feature of parenchymal actinomycosis is a chronic segmental air-space consolidation containing necrotic low-attenuation areas with frequent cavity formation. A broncholith can be secondarily infected with Actinomyces organisms, resulting in endobronchial actinomycosis. It usually manifests as a proximal endobronchial calcification associated with distal obstructive pneumonia.

Original languageEnglish
Pages (from-to)225-231
Number of pages7
JournalAmerican Journal of Roentgenology
Issue number1
StatePublished - Jan 2006


  • Broncholithiasis
  • CT
  • Endobronchial actinomycosis
  • Thoracic actinomycosis


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