title: Odontogenic keratocyst in maxillary sinus with invasive behaviour.
abstract: Odontogenic keratocyst is a cystic lesion characterized by a high rate of recurrence. This report describes a rare case of ciliated epithelium-lined odontogenic keratocyst in the maxilla of a 27-year-old female. Panoramic radiography showed a lytic lesion on the right maxilla associated with an impacted molar tooth. Computerized tomography image revealed the involvement of the lesion with the right maxillary sinus, destroying the sinus floor. Histopathologically, the typical keratinized epithelial-lined cyst of odontogenic keratocyst abruptly changed into a ciliated epithelium, suggesting the fusion of both these epithelia rather a metaplastic transformation. The biological behaviour of odontogenic keratocysts is discussed.
authors.affiliation: Department of Oral Pathology, School of Dentistry, Federal University of Goias, Goiania, Brazil. vencio@odonto.ufg.br
authors.forename: Eneida Franco
authors.initials: EF
authors.lastname: Vencio
authors.forename: Alessandra
authors.initials: A
authors.lastname: Mota
authors.forename: Carolina
authors.initials: C
authors.lastname: de Melo Pinho
authors.forename: Aylton Alves
authors.initials: AA
authors.lastname: Dias Filho
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008439:Maxillary Diseases / Q000473:pathology*; D008443:Maxillary Sinus / Q000473:pathology*; D009807:Odontogenic Cysts / Q000473:pathology*; D010254:Paranasal Sinus Diseases / Q000473:pathology*; D014057:Tomography, X-Ray Computed