title: Epibulbar osseous choristoma: a clinicopathological case series and review of the literature.
abstract: BACKGROUND
  Choristomas are benign, congenital tumours composed of normal tissue in an abnormal location. Osseous choristomas represent the rarest form of epibulbar choristomas, with now 65 cases reported in the literature. We did a retrospective clinicopathological study of all patients with epibulbar osseous choristoma observed at our institution since 1982 and updated the last review of the literature.
  
  
  METHODS
  Three Caucasian male patients, aged between 3 months and 11 years, were identified. All osseous choristomas were located under the superotemporal bulbar conjunctiva of the right eye.
  
  
  RESULTS
  All lesions were managed with surgical excision. Histopathology revealed the presence of lamellar bone in all cases, one of which was associated with a dermolipoma.
  
  
  CONCLUSIONS
  We report a small rare case series of 3 epibulbar osseous choristomas and did a review of the literature. In one patient, the osteoma was associated with a dermolipoma, corresponding to the fourth reported complex choristoma of this type, in an otherwise normal eye, in the literature.
authors.affiliation: Jules-Gonin Eye Hospital, University of Lausanne, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Vachette
authors.forename: A
authors.initials: A
authors.lastname: Moulin
authors.forename: L
authors.initials: L
authors.lastname: Zografos
authors.forename: A
authors.initials: A
authors.lastname: Schalenbourg
mesh_terms: D001842:Bone and Bones; D002648:Child; D002828:Choristoma / Q000175:diagnosis* / Q000601:surgery*; D015862:Choroid Diseases / Q000175:diagnosis* / Q000601:surgery*; D006801:Humans; D007223:Infant; D008297:Male; D016896:Treatment Outcome