title: Fluorescein sodium-guided surgery of a brain abscess: A case report.
abstract: BACKGROUND
  Up to now, the feasibility and benefit of using fluorescein sodium under a dedicated surgical microscope filter (YE560, YELLOW 560 nm filter, Carl Zeiss Meditec, Germany) has never been clinically evaluated in infectious disorders of the brain.
  
  
  METHODS
  Here, we report the case of a male patient with a brain abscess in the right parietal lobe that was removed under fluorescence-guidance (intravenous administration of fluorescein sodium 10%, 5 mg/kg bodyweight). The abscess capsule showed intensive yellow fluorescent staining, while - under white light - the cortex appeared normal.
  
  
  CONCLUSIONS
  This technique may improve the identification and surgical removal of brain abscesses.
authors.affiliation: Department of Neurosurgery, University Medical Center Regensburg, Regensburg, Germany.
authors.forename: Julius
authors.initials: J
authors.lastname: Höhne
authors.affiliation: Department of Neurosurgery, University Medical Center Regensburg, Regensburg, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Brawanski
authors.affiliation: Department of Neurosurgery, University Medical Center Regensburg, Regensburg, Germany.
authors.forename: Karl-Michael
authors.initials: KM
authors.lastname: Schebesch
keywords: Blood–brain barrier; YELLOW 560 nm filter; brain abscess; fluorescein sodium; fluorescence-guided surgery