title: Pulmonary actinomycosis in a male patient with a tracheal bronchus.
abstract: BACKGROUND
  Tracheal bronchus is a congenital malformation comprising an abnormal bronchus originating from the trachea or other bronchus. This malformation has been associated with recurrent pneumonia in children, but is rarely associated with infection in adults. Actinomyces species are rare causes of necrotizing pneumonias that often masquerade as malignancy, lung abscesses and tuberculosis.
  
  
  RESULTS
  A case involving a 46-year-old man with a tracheal bronchus and chronic pneumonia syndrome is presented. Bronchialveolar lavage and transthoracic needle biopsy demonstrated the presence of Actinomyces meyeri and Fusobacterium species.
  
  
  CONCLUSIONS
  The present article reports the first documented case of actinomycosis occurring in a patient with a tracheal bronchus.
authors.affiliation: Department of Medicine, University of Ottawa, Ottawa, Ontario.
authors.forename: Cecilia T
authors.initials: CT
authors.lastname: Costiniuk
authors.forename: Nha
authors.initials: N
authors.lastname: Voduc
authors.forename: Carolina
authors.initials: C
authors.lastname: de Souza
mesh_terms: D000196:Actinomycosis / Q000175:diagnosis* / Q000188:drug therapy; D001980:Bronchi / Q000002:abnormalities*; D018893:Bronchoalveolar Lavage; D002908:Chronic Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D010406:Penicillins / Q000627:therapeutic use; D018410:Pneumonia, Bacterial / Q000175:diagnosis* / Q000188:drug therapy; D014057:Tomography, X-Ray Computed; D014132:Trachea / Q000002:abnormalities*
chemical_list: D010406:Penicillins