title: Ossifying cystic odontogenic and Schneiderian choristoma of the orbit.
abstract: A 12-year-old girl presented with a left infraorbital lesion, causing upward globe displacement. Imaging confirmed a mass between the globe and the orbital floor. The lesion was removed via a sub-ciliary approach and histology revealed a a mature tooth along with a periodontal ligament, oral-type mucinous glands and bone. Six years later a mass recurred at exactly the same site and on this occasion, revealed cysts containing mucin and lined by Schneiderian type epithelium. A rather complex combination of a tooth, lamellar bone, mucinous oral type glands and Schneiderian cystic epithelium is highly unusual and we have called the lesion "ossifying cystic odontogenic and Schneiderian choristoma of the orbit."
authors.affiliation: National Specialist Ophthalmic Pathology Service, Dept of Histopathology, Royal Hallamshire Hospital, Sheffield , England , United Kingdom .
authors.forename: Hardeep Singh
authors.initials: HS
authors.lastname: Mudhar
authors.forename: Murtuza
authors.initials: M
authors.lastname: Nurrudin
mesh_terms: D002648:Child; D002828:Choristoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D003560:Cysts / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007180:Incisor; D009061:Mouth Mucosa; D013508:Ophthalmologic Surgical Procedures; D009916:Orbital Diseases / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D010513:Periodontal Ligament; D012008:Recurrence; D014057:Tomography, X-Ray Computed