title: Chest CT findings and clinical features in mild Legionella pneumonia.
abstract: OBJECTIVE
  To evaluate mild Legionella pneumonia (LP) by chest CT, and clinical features.
  
  
  METHODS
  In June 2000, an outbreak of LP occurred in Japan. Eight patients with mild LP (seven men, one woman; mean age 55.9 years) had fevers of more than 38 degrees C, but respiratory symptoms were observed only in four. Chest CT was performed before starting an appropriate treatment.
  
  
  METHODS
  CT images were assessed by the distribution of ground-glass opacity (GGO), consolidation, and the existence of pleural effusion.
  
  
  RESULTS
  Chest CT findings: multiple segments were affected in all of the patients, (pleural effusion in three, peripheral lung consolidation in seven, and GGO in seven). GGO was located around the consolidation in six patients.
  
  
  CONCLUSIONS
  Mild LP may present as fever without respiratory symptoms. Chest CT findings of mild LP are bilateral, multiple affected segments and peripheral lung consolidation with GGO.
authors.affiliation: Fifth Department of Internal Medicine, Tokyo Medical University, Tokyo Medical University, Kasumigaura Hospital, Ibaraki.
authors.forename: Hisanaga
authors.initials: H
authors.lastname: Yagyu
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nakamura
authors.forename: Fumihiro
authors.initials: F
authors.lastname: Tsuchida
authors.forename: Akihiko
authors.initials: A
authors.lastname: Sudou
authors.forename: Koji
authors.initials: K
authors.lastname: Kishi
authors.forename: Shuuji
authors.initials: S
authors.lastname: Oh-ishi
authors.forename: Takeshi
authors.initials: T
authors.lastname: Matsuoka
mesh_terms: D000328:Adult; D000368:Aged; D015331:Cohort Studies; D004269:DNA, Bacterial / Q000032:analysis; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D007875:Legionella / Q000302:isolation & purification*; D007877:Legionnaires' Disease / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000000981:diagnostic imaging*; D016133:Polymerase Chain Reaction; D018570:Risk Assessment; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D014057:Tomography, X-Ray Computed; D014505:Urban Population
chemical_list: D004269:DNA, Bacterial