title: Condylar osteochondroma manifesting as Class III skeletal dysplasia: diagnosis and surgical approach.
abstract: This is a case report of a 21-year-old man who had a gradually progressive Class III malocclusion and crepitation of the right temporomandibular joint. Routine TMJ tomograms revealed a radiopaque-radiolucent lesion of the right mandibular condyle with a compensatory anteroinferior displacement of the left mandibular condyle. Nuclear bone scans confirmed increased asymmetric technetium 99 tracer uptake in the region of the right temporomandibular joint. A two-stage surgical approach was undertaken; this consisted of excision of the condylar lesion to correct the Class III malocclusion and posterior crossbite and a LeFort I osteotomy to correct the slight transverse maxillary cant and anterior open bite. A histopathologic diagnosis confirmed osteochondroma of the mandibular condyle.
authors.affiliation: St. Mary's Health Center, St. Louis, Mo.
authors.forename: E G
authors.initials: EG
authors.lastname: Herbosa
authors.forename: K S
authors.initials: KS
authors.lastname: Rotskoff
mesh_terms: D000328:Adult; D002508:Cephalometry; D003937:Diagnosis, Differential; D005146:Facial Asymmetry / Q000209:etiology; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D008335:Mandibular Condyle / Q000473:pathology* / Q000601:surgery; D008339:Mandibular Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D015831:Osteochondroma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D010027:Osteotomy / Q000379:methods; D026741:Physical Therapy Modalities