title: [Series: Diagnosis at a glance].
authors.affiliation: Department of Internal Medicine, Nippon Medical School, Japan.
authors.forename: Koichiro
authors.initials: K
authors.lastname: Kamio
authors.forename: Akinobu
authors.initials: A
authors.lastname: Yoshimura
mesh_terms: D006801:Humans; D008297:Male; D008875:Middle Aged; D011020:Pneumonia, Pneumocystis / Q000175:diagnosis*