title: Liver and brain abscess caused by Aggregatibacter paraphrophilus in association with a large patent foramen ovale: a case report.
abstract: BACKGROUND
  Aggregatibacter paraphrophilus (former name Haemophilus paraphrophilus) is a normal commensal of the oral flora. It is a rare cause of hepatobiliary or intracerebral abscesses.
  
  
  METHODS
  We report a case of a 53-year-old Caucasian man with a liver abscess and subsequent brain abscesses caused by Aggregatibacter paraphrophilus. The probable source of the infection was the oral flora of our patient following ingestion of a dental filling. The presence of a large patent foramen ovale was a predisposing factor for multifocal abscesses.
  
  
  CONCLUSIONS
  In this case report, we describe an unusual case of a patient with both liver and brain abscesses caused by an oral commensal Aggregatibacter paraphrophilus that can occasionally show significant pathogenic potential.
authors.affiliation: Department of Medicine, Hinchingbrooke Health Care NHS Trust, Hinchingbrooke Hospital, Hinchingbrooke Park, Huntingdon, PE29 6NT, UK. andreas.karas@papworth.nhs.uk.
authors.forename: Shaumya
authors.initials: S
authors.lastname: Ariyaratnam
authors.forename: Parag R
authors.initials: PR
authors.lastname: Gajendragadkar
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Dickinson
authors.forename: Phil
authors.initials: P
authors.lastname: Roberts
authors.forename: Kathryn
authors.initials: K
authors.lastname: Harris
authors.forename: Andrew
authors.initials: A
authors.lastname: Carmichael
authors.forename: Johannis A
authors.initials: JA
authors.lastname: Karas