title: Aneurismal bone cyst: a conservative surgical technique. A case report treated with a small access osteotomy.
abstract: BACKGROUND
  Aneurismal bone cysts (ABCs) are benign, non-neoplastic, expansive, and locally destructive lesions that may occur rarely. They are well defined and usually occur in the long bones, pelvis and vertebrae. According to the 2005 World Health Organization (WHO) histological classification of odontogenic tumours, ABC is classified as a bone-related lesion as ossyfing fibroma, fibrous dysplasia, osseous dysplasia, central giant cell lesion (granuloma-CGCL), cherubism and simple bone cyst (SBC). ABCs, as CGCLs and SBCs may arise as a consequence of an earlier trauma causing an overflow of blood into the bone, though a number of pathogenic theories have been put forward. The aim of this study is to present an unusual case of aneurismal bone cyst and to compare the different possibilities of surgical treatment after review of the literature.
  
  
  METHODS
  ABC was localised in the posterior right region of the mandible in an 11-year-old boy, and removed by a surgical procedure involving a small access osteotomy of the mandibular ramus with removal of the cortical bone in order to enucleate the whole lesion, the wisdom tooth and to preserve the healthy bone.
authors.affiliation: Trainee, Department of Oral Surgery, IRCCS Fondazione Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Grecchi
authors.affiliation: Clinical Assistant Professor, School of Oral Surgery, University of Milan, Milan, Italy.
authors.forename: A E
authors.initials: AE
authors.lastname: Borgonovo
authors.affiliation: Professor Head, Department of Oral Rehabilitation, Istituto Stomatologico Italiano, University of Milan, Milan, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Re
authors.affiliation: Unit Head, Department of Oral Surgery, IRCCS Fondazione Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Creminelli
authors.affiliation: Unit Head, Department of Maxillofacial Surgery, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Grecchi
mesh_terms: D017824:Bone Cysts, Aneurysmal / Q000601:surgery*; D002648:Child; D006801:Humans; D008297:Male; D010027:Osteotomy / Q000379:methods*