title: Intraosseous schwannoma mimicking a periapical lesion on the adjacent tooth: case report.
abstract: OBJECTIVE
  To present an additional case of intraosseous schwannoma involving the apical area in the mandibular alveolar bone mimicking an inflammatory periapical lesion.
  
  
  CONCLUSIONS
  This article describes a case of schwannoma periapically located mimicking an inflammatory periapical lesion in the mandible of a 34-year-old female. Diagnostic and therapeutic problems can occur when this lesion is misinterpreted as being endodontic in origin. The diagnosis, radiograph, immunohistochemical aspects and treatment are also discussed.
  
  
  CONCLUSIONS
  Intraosseous schwannoma is a rare unilocular radiolucency that when located periapically could be misdiagnosed as an endodontic lesion and result in unnecessary root canal treatment. The vitality of the pulp is an important test to exclude lesions of inflammatory origin. Histological examination is important to establish the diagnosis of lesions in the periradicular region.
authors.affiliation: School of Dentistry and Postgraduate Program in Rehabilitation Science, Nove de Julho University, São Paulo, Brazil. manomartins@gmail.com
authors.forename: M D
authors.initials: MD
authors.lastname: Martins
authors.forename: S A
authors.initials: SA
authors.lastname: Taghloubi
authors.forename: S K
authors.initials: SK
authors.lastname: Bussadori
authors.forename: K P S
authors.initials: KP
authors.lastname: Fernandes
authors.forename: R M
authors.initials: RM
authors.lastname: Palo
authors.forename: M A T
authors.initials: MA
authors.lastname: Martins
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008339:Mandibular Neoplasms / Q000473:pathology* / Q000601:surgery; D009442:Neurilemmoma / Q000473:pathology* / Q000601:surgery; D010484:Periapical Granuloma / Q000175:diagnosis*