title: Unilateral recurrent acute retinal necrosis syndrome caused by cytomegalovirus in an immune-competent adult.
abstract: OBJECTIVE
  To report an immune-competent patient with unilateral recurrent acute retinal necrosis syndrome caused by cytomegalovirus, and to highlight the importance of diagnostic vitreous biopsy and specific antiviral therapy in this condition.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  A 75-year-old man with good general health had two episodes of acute retinal necrosis syndrome affecting his left eye. Vitreous biopsy was performed in each episode, and polymerase chain reaction analysis on the vitreous specimen was positive for cytomegalovirus and negative for varicella zoster virus and herpes simplex virus 1 and 2. On each occasion, investigations indicated past cytomegalovirus infection but no evidence of a systemic re-activation. No indication of immunodeficiency was found over a 2-year follow-up period. His management, which included systemic and intravitreal antiviral therapy, is discussed.
  
  
  CONCLUSIONS
  To the authors' knowledge, only two other cases of acute retinal necrosis syndrome caused by cytomegalovirus have been reported previously in immune-competent patients. This case illustrates the importance of vitreous biopsy for viral polymerase chain re-action studies in cases of acute retinal necrosis syndrome, in order to direct appropriate antiviral treatment. It also illustrates the role of an intravitreal antiviral drug that is effective against all three herpetic viruses.
authors.affiliation: Dept. of Ophthalmology, Royal Victoria Infirmary, Univ. of Newcastle upon Tyne, Newcastle upon Tyne, UK. gvorosgr@doctors.org.uk
authors.forename: G M
authors.initials: GM
authors.lastname: Voros
authors.forename: R
authors.initials: R
authors.lastname: Pandit
authors.forename: M
authors.initials: M
authors.lastname: Snow
authors.forename: P G
authors.initials: PG
authors.lastname: Griffiths
mesh_terms: D000368:Aged; D000998:Antiviral Agents / Q000627:therapeutic use; D001706:Biopsy; D003587:Cytomegalovirus / Q000235:genetics / Q000302:isolation & purification; D003586:Cytomegalovirus Infections / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy; D004279:DNA, Viral / Q000032:analysis; D015828:Eye Infections, Viral / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D015774:Ganciclovir / Q000627:therapeutic use; D006801:Humans; D007121:Immunocompetence; D008297:Male; D016133:Polymerase Chain Reaction; D012008:Recurrence; D015882:Retinal Necrosis Syndrome, Acute / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D014792:Visual Acuity; D014822:Vitreous Body / Q000821:virology
chemical_list: D000998:Antiviral Agents; D004279:DNA, Viral; D015774:Ganciclovir