title: [Four cases of respiratory infections caused by Legionella pneumophila serogroup 3].
abstract: Legionella pneumonia tends to be severe and is known to be fatal. Introduction of the urinary Legionella antigen test and changes in the Infectious Disease Law have led to increased numbers of reports, and milder cases are now occasionally seen. We experienced three cases demonstrating mild respiratory infections and one case demonstrating nosocomial pneumonia associated by Legionella pneumophila serogroup 3. Case 1 showed multiple ground-glass opacities on HRCT and productive cough. Cases 2 and 3 showed abnormal findings on chest X-ray, and chest CT findings in both cases suggested chronic respiratory infection. Case 4 experienced fever and hypoxia, and pulmonary edema was noted on X-ray. All of them four cases were diagnosed with respiratory infections isolated L. pneumophila serogroup 3 by culture results, and three of them cases were treated in the outpatient clinic. Thus, milder cases of Legionella pneumonia may be encountered during routine care, and tests for Legionella should be performed in such cases.
authors.affiliation: Department of Respiratory Medicine, Kurashiki Central Hospital.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Nishiyama
authors.forename: Tadashi
authors.initials: T
authors.lastname: Ishida
authors.forename: Youhei
authors.initials: Y
authors.lastname: Kourogi
authors.forename: Satoshi
authors.initials: S
authors.lastname: Konishi
authors.forename: Kazuya
authors.initials: K
authors.lastname: Thubouchi
authors.forename: Chiya
authors.initials: C
authors.lastname: Iga
authors.forename: Kei
authors.initials: K
authors.lastname: Kunimasa
authors.forename: Masahiro
authors.initials: M
authors.lastname: Iwasaku
authors.forename: Hajime
authors.initials: H
authors.lastname: Hukuyama
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Nakagawa
authors.forename: Akihiro
authors.initials: A
authors.lastname: Itou
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ubukata
authors.forename: Hiroshige
authors.initials: H
authors.lastname: Yoshioka
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Tachibana
authors.forename: Machiko
authors.initials: M
authors.lastname: Arita
authors.forename: Toru
authors.initials: T
authors.lastname: Hashimoto
authors.forename: Junko
authors.initials: J
authors.lastname: Amemura-Maekawa
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007876:Legionellosis; D008297:Male; D008875:Middle Aged