title: Thoracic actinomycosis: CT features with histopathologic correlation.
abstract: 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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul 135-710, South Korea.
authors.forename: Tae Sung
authors.initials: TS
authors.lastname: Kim
authors.forename: Joungho
authors.initials: J
authors.lastname: Han
authors.forename: Won-Jung
authors.initials: WJ
authors.lastname: Koh
authors.forename: Jae Chol
authors.initials: JC
authors.lastname: Choi
authors.forename: Myung Jin
authors.initials: MJ
authors.lastname: Chung
authors.forename: Ju Hyun
authors.initials: JH
authors.lastname: Lee
authors.forename: Sung Shine
authors.initials: SS
authors.lastname: Shim
authors.forename: Semin
authors.initials: S
authors.lastname: Chong
mesh_terms: D000196:Actinomycosis / Q000000981:diagnostic imaging* / Q000473:pathology; D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008171:Lung Diseases / Q000000981:diagnostic imaging* / Q000382:microbiology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed