title: Unusual toxoplasmic chorioretinitis in advanced age: a diagnostic problem.
abstract: OBJECTIVE
  To raise awareness regarding presentation of toxoplasmic chorioretinitis late in life, and to discuss the invasive diagnostic options.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  A 62-year-old patient presenting with posterior vitritis and a focus of retinitis was misdiagnosed and treated with antivirals and corticosteroids. Relapse after initial stabilization justified a vitreous tap for culture and DNA detection of a number of infectious agents, leading to the correct diagnosis of T.gondii infection.
  
  
  CONCLUSIONS
  Ocular sampling may be necessary to secure timely diagnosis and treatment of atypical retinitis. Acquired ocular toxoplasmosis may be under-recognized as a cause of infectious posterior uveitis and caution should be applied when administering steroids without a definite diagnosis.
authors.affiliation: Department of Ophthalmology, Aristotle University of Thessaloniki, Thessaloniki, Greece. mataftsi@doctors.org.uk
authors.forename: A
authors.initials: A
authors.lastname: Mataftsi
authors.forename: A
authors.initials: A
authors.lastname: Fragkou
authors.forename: E
authors.initials: E
authors.lastname: Vezyri
authors.forename: F
authors.initials: F
authors.lastname: Topouzis
authors.forename: E
authors.initials: E
authors.lastname: Diza
authors.forename: S A
authors.initials: SA
authors.lastname: Dimitrakos
mesh_terms: D000981:Antiprotozoal Agents / Q000627:therapeutic use; D002825:Chorioretinitis / Q000175:diagnosis* / Q000188:drug therapy / Q000469:parasitology; D016054:DNA, Protozoan / Q000032:analysis; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D014122:Toxoplasma / Q000235:genetics / Q000302:isolation & purification; D014126:Toxoplasmosis, Ocular / Q000175:diagnosis* / Q000188:drug therapy / Q000469:parasitology; D014792:Visual Acuity / Q000502:physiology; D014822:Vitreous Body / Q000469:parasitology
chemical_list: D000981:Antiprotozoal Agents; D016054:DNA, Protozoan