title: [Ocular toxocariasis or retinoblastoma?].
abstract: BACKGROUND
  Seroprevalence studies in Spain have shown that a high number of the population has been in contact with Toxocara canis although no cases of ocular involvement by this helminth have been described. The clinical and age of presentation makes differential diagnosis with retinoblastoma necessary, which is at time difficult, although essential since the treatment and prognosis are very different.
  
  
  METHODS
  One case of ocular toxocariosis and the diagnostic keys based on the following are described: ophthalmologic exploration, imaging techniques (ECHO, TC, NMR), aqueous humor cytology, LDH quotient of aqueous/serum humor, and determination of specific anti-Toxocara antibodies by ELISA in serum and aqueous humor.
  
  
  CONCLUSIONS
  Correct differential diagnosis between ocular toxocariosis and retinoblastoma is required.
authors.affiliation: Unidad de Medicina Tropical y Parasitología Clínica, Universidad Complutense, Madrid.
authors.forename: R
authors.initials: R
authors.lastname: López-Vélez
authors.forename: M
authors.initials: M
authors.lastname: Suárez de Figueroa
authors.forename: L
authors.initials: L
authors.lastname: Gimeno
authors.forename: A
authors.initials: A
authors.lastname: García-Camacho
authors.forename: S
authors.initials: S
authors.lastname: Fenoy
authors.forename: J L
authors.initials: JL
authors.lastname: Guillén
authors.forename: L
authors.initials: L
authors.lastname: Castellote
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D015822:Eye Infections, Parasitic / Q000175:diagnosis*; D005134:Eye Neoplasms / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007816:Larva Migrans, Visceral / Q000175:diagnosis*; D012175:Retinoblastoma / Q000175:diagnosis*
vernacular_title: Toxocariosis ocular o retinoblastoma?