title: [Spontaneous cure of pneumonia caused by Chlamydia pneumoniae].
abstract: A 62-year-old male was admitted to our hospital after an abnormal shadow was pointed out by Chest X-ray in June, 1994, even though he was asymptomatic otherwise (first episode). The serum IgG antibody against Chlamydia pneumoniae was elevated up to 512-fold in the acute phase and decreased to 32-fold in the convalescent phase using the micro-immunofluorescence (MIF) test, indicating a C. pneumoniae acute infection. In fact, no other micro-organisms were detected. The patient recovered from the pneumonia without any treatment. He was admitted to our hospital again after having right chest pain in December, 1994 (second episode). An X-ray examination revealed a slight infiltration of the right lower lung field and pleural effusion. In this episode, he received therapy with carbapenem anti-bacterial agent and he recovered from the pneumonia 9 days after the administration of the antibiotic. The serum IgG titer against C. pneumoniae was elevated up to 1024-fold on admission, indicating mixed infection with bacteria and C. pneumoniae. It was concluded that both of these episodes indicated a spontaneous cure of the pneumonia which had developed from C. pneumoniae.
authors.affiliation: Department of Medicine, Kawasaki Medical School.
authors.forename: N
authors.initials: N
authors.lastname: Miyashita
authors.forename: Y
authors.initials: Y
authors.lastname: Kubota
authors.forename: S
authors.initials: S
authors.lastname: Kawabata
authors.forename: K
authors.initials: K
authors.lastname: Yoshida
authors.forename: T
authors.initials: T
authors.lastname: Kishimoto
authors.forename: M
authors.initials: M
authors.lastname: Nakajima
authors.forename: Y
authors.initials: Y
authors.lastname: Niki
authors.forename: T
authors.initials: T
authors.lastname: Matsushima
authors.forename: A
authors.initials: A
authors.lastname: Matsumoto
authors.forename: R
authors.initials: R
authors.lastname: Soejima
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis; D002690:Chlamydia Infections / Q000175:diagnosis*; D016993:Chlamydophila pneumoniae / Q000276:immunology; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D008297:Male; D008875:Middle Aged; D018410:Pneumonia, Bacterial / Q000175:diagnosis*; D012075:Remission, Spontaneous; D012698:Serologic Tests
chemical_list: D000907:Antibodies, Bacterial; D007074:Immunoglobulin G