title: [A Patient with a Wedge-shaped Pulmonary Lesion Associated with Streptococcus parasanguinis].
abstract: An 84-year-old man was admitted to our hospital with bloody sputum. He was found to have a right lower lobe wedge-shaped nodular lesion with chest X-ray and computed tomography of the chest. Ceftriaxone and minocycline were started empirically based on a working diagnosis of community-acquired pneumonia. Streptococcus parasanguinis was isolated with sputum cultures obtained on three consecutive days and was identified based on its biochemical properties. S. parasanguinis is a member of the sanguinis group of viridans Streptococci. It is known as a causative pathogen for endocarditis. There are very few reports of S. parasanguinis associated with pulmonary infections. The present report describes the association of S. parasanguinis with a wedge-shaped nodular lesion in the lungs.
authors.forename: Hiroya
authors.initials: H
authors.lastname: Miyamoto
authors.forename: Harumi
authors.initials: H
authors.lastname: Gomi
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Ishioka
authors.forename: Taijiro
authors.initials: T
authors.lastname: Shirokawa
mesh_terms: D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D002443:Ceftriaxone / Q000627:therapeutic use*; D017714:Community-Acquired Infections / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D008297:Male; D011014:Pneumonia / Q000175:diagnosis / Q000188:drug therapy*; D013290:Streptococcal Infections / Q000175:diagnosis / Q000188:drug therapy* / Q000473:pathology; D013291:Streptococcus / Q000302:isolation & purification*
chemical_list: D000900:Anti-Bacterial Agents; D002443:Ceftriaxone