title: Association of progressive outer retinal necrosis and varicella zoster encephalitis in a patient with AIDS.
abstract: BACKGROUND
  A patient with AIDS who developed the clinical picture of bilateral progressive outer retinal necrosis (PORN) in combination with varicella zoster encephalitis is described. The picture developed more than 2 years after an episode of ophthalmic zoster infection, and following intermittent exposure to oral acyclovir because of recurrent episodes of cutaneous herpes simplex infection.
  
  
  METHODS
  Aqueous humour, obtained by paracentesis of the anterior chamber, was analysed using immunofluorescence and polymerase chain reaction (PCR). Postmortem analysis of eye and brain tissue was performed by using conventional techniques and in situ hybridisation.
  
  
  RESULTS
  While conventional techniques all failed to detect a causative agent, analysis of the aqueous humour using PCR, and histological examination of necropsy specimens from eyes and brain using in situ hybridisation were conclusive for the diagnosis varicella zoster virus (VZV) infection.
  
  
  CONCLUSIONS
  This case documents the presumed association of PORN and VZV encephalitis in a severely immunocompromised AIDS patient.
authors.affiliation: Department of Ophthalmology, Academic Medical Center, University of Amsterdam, The Netherlands.
authors.forename: G J
authors.initials: GJ
authors.lastname: van den Horn
authors.forename: C
authors.initials: C
authors.lastname: Meenken
authors.forename: D
authors.initials: D
authors.lastname: Troost
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000150:complications*; D000212:Acyclovir / Q000627:therapeutic use; D000328:Adult; D000998:Antiviral Agents / Q000627:therapeutic use; D018792:Encephalitis, Viral / Q000150:complications* / Q000175:diagnosis; D006561:Herpes Simplex / Q000188:drug therapy; D006562:Herpes Zoster / Q000150:complications* / Q000188:drug therapy; D006801:Humans; D017403:In Situ Hybridization; D008297:Male; D009336:Necrosis; D016133:Polymerase Chain Reaction; D012164:Retinal Diseases / Q000150:complications* / Q000188:drug therapy / Q000821:virology
chemical_list: D000998:Antiviral Agents; D000212:Acyclovir