title: Characteristic features of the odontogenic myxoma on cone beam computed tomography.
abstract: OBJECTIVE
  To illustrate the characteristic features of odontogenic myxoma (OM) on CBCT.
  
  
  METHODS
  From 52 subjects with histopathologically diagnosed OMs, 18 subjects who underwent a CBCT examination were retrieved between May 2009 and April 2016. Features on CBCT images and clinical records were carefully observed and analyzed.
  
  
  RESULTS
  Characteristic features include: (1) fine and straight septa that were recognized to separate the tumour into triangular, square or rectangular spaces, which appeared as "tennis racket" or "honeycomb" patterns; (2) septa that frequently scattered to the borders of lesions and appeared perpendicular to the margins; (3) tooth displacement and resorption that were seen in most of the OM lesions; (4) OMs that were noted to have a tendency to involve the alveolar process, scallop between the roots and affect the integrity of the alveolar ridge; (5) the cortex of OMs that appeared normally perforated and the edge of the cortex expanded into the soft tissue.
  
  
  CONCLUSIONS
  CBCT is highly effective in demonstrating the comprehensive internal structures of the lesions precisely and providing detailed information for the diagnosis of OM.
authors.affiliation: 1 State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China.
authors.forename: Kaili
authors.initials: K
authors.lastname: Wang
authors.affiliation: 1 State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China.
authors.forename: Wenhao
authors.initials: W
authors.lastname: Guo
authors.affiliation: 2 Department of Oral Radiology, West China School of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Meng
authors.initials: M
authors.lastname: You
authors.affiliation: 2 Department of Oral Radiology, West China School of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.affiliation: 2 Department of Oral Radiology, West China School of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Bei
authors.initials: B
authors.lastname: Tang
authors.affiliation: 2 Department of Oral Radiology, West China School of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Guangning
authors.initials: G
authors.lastname: Zheng
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000539:Alveolar Process / Q000000981:diagnostic imaging; D002648:Child; D002675:Child, Preschool; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009232:Myxoma / Q000000981:diagnostic imaging*; D009808:Odontogenic Tumors / Q000000981:diagnostic imaging*
keywords: CBCT; characteristic feature; myxofibroma; odontogenic myxoma; odontogenic tumour