title: Trabecular juvenile ossifying fibroma with aneurysmal bone cyst: a rare presentation.
abstract: Juvenile ossifying fibroma is an uncommon, benign, bone-forming neoplasm that is distinguished from other fibro-osseous lesions primarily by its age of onset, clinical presentation, and potential behavior. It mainly occurs in juveniles and has a slight male predilection and more aggressive  behavior than a common ossifying fibroma. There are 2 distinct histopathological variants of this lesion: (1) psammomatoid pattern and (2) trabecular pattern. An aneurysmal bone cyst may occur in association with other bone lesions, such as fibrous dysplasia, ossifying fibroma, and giant cell  lesion. The clinical management and prognosis of juvenile ossifying fibroma is somewhat uncertain, and this tumor has high rates of recurrence. Such behavior may be related to younger patient age and the concurrent development of aneurysmal bone cyst. The purpose of this paper was to report  a case of trabecular juvenile ossifying fibroma in a 9-year-old girl associated with an aneurysmal bone cyst, presenting an aggressive behavior, and causing significant facial asymmetry.
authors: São Leopoldo Mandic Institute and Research Center, Campinas, São Paulo, Brazil. cabs.barcellos@hotmail.com
authors: Carolina Amália Barcellos
authors: CA
authors: Silva
authors: Alessandra Dutra
authors: AD
authors: Silva
authors: José Antônio de Carvalho
authors: JA
authors: Soares
authors: Cristiane
authors: C
authors: Furuse
authors: Ney Soares
authors: NS
authors: de Araújo
authors: Vera Cavalcanti
authors: VC
authors: de Araújo
mesh_terms: D017824:Bone Cysts, Aneurysmal / Q000150:complications* / Q000473:pathology; D002648:Child; D005146:Facial Asymmetry / Q000209:etiology; D005260:Female; D018214:Fibroma, Ossifying / Q000150:complications* / Q000473:pathology; D006801:Humans; D008439:Maxillary Diseases / Q000150:complications* / Q000473:pathology; D008441:Maxillary Neoplasms / Q000150:complications* / Q000473:pathology; D009364:Neoplasm Recurrence, Local