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Maxillary ameloblastic fibroma: a case report
Costa, Daniela Otero Pereira da; Alves, Adriana Terezinha Neves Novellino; Calasans-Maia, Mônica Diuna; Cruz, Ricardo Lopes da; Lourenço, Simone de Queiroz Chaves.
  • Costa, Daniela Otero Pereira da; Fluminense Federal University. Department of Pathology. Niterói. BR
  • Alves, Adriana Terezinha Neves Novellino; University Gama Filho. Dental School. Rio de Janeiro. BR
  • Calasans-Maia, Mônica Diuna; Fluminense Federal University. Department of Pathology. Niterói. BR
  • Cruz, Ricardo Lopes da; Institute of Orthopedics and Trauma. Department of Oral and Maxillofacial Surgery. Rio de Janeiro. BR
  • Lourenço, Simone de Queiroz Chaves; Fluminense Federal University. Department of Pathology. Niterói. BR
Braz. dent. j ; 22(2): 171-174, 2011. ilus
Article in English | LILACS | ID: lil-583809
ABSTRACT
Ameloblastic fibroma is a relatively rare benign odontogenic tumor in which both the epithelial and ectomesenchymal components are neoplastic. An 8-year-old Caucasian boy was referred to the dentist for evaluation of failed eruption of the maxillary left first molar. The panoramic radiograph showed a well-circumscribed unilocular radiolucency involving an unerupted maxillary left first permanent molar. The lesion was enucleated and the material was sent for histopathologic examination. Microscopically, it was composed by cords and islands of odontogenic epithelium in a myxoid cell-rich stroma that closely resemble the dental papilla with histopathological diagnosis of ameloblastic fibroma. After 24 months of follow-up no recurrence was observed and the maxillary left first molar erupted spontaneously through the buccal mucosa and was aligned with a fixed orthodontic appliance. This case emphasized the importance of careful differential diagnosis of intraosseous oral lesions and reported a rarity of the lesion and its atypical location.
RESUMO
Fibroma ameloblástico é um tumor odontogênico benigno relativamente raro, em que ambos os componentes epiteliais e ectomesenquimais são neoplásicos. Menino de oito anos de idade, branco, foi encaminhado ao dentista para avaliar a falha na erupção do primeiro molar maxilar do lado esquerdo. A radiografia panorâmica revelou imagem radiolúcida, unilocular, bem circunscrita, envolvendo o primeiro molar permanente maxilar esquerdo incluso. A lesão foi enucleada e o material encaminhado para avaliação histopatológica. Microscopicamente, era composta de ilhas e cordões de epitélio odontogênico num estroma mixóide rico em células, que se assemelhava à papila dentária, com diagnóstico histopatológico de fibroma amelobástico. Após 24 meses de acompanhamento, nenhuma recorrência foi observada e o primeiro molar permanente maxilar irrompeu espontaneamente através da mucosa bucal e foi alinhado com aparelho ortodôntico fixo. Esse caso enfatiza a importância do cuidadoso diagnóstico diferencial das lesões orais intra-ósseas e relato de lesão rara e sua localização atípica.
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Full text: Available Index: LILACS (Americas) Main subject: Tooth, Unerupted / Maxillary Neoplasms / Odontogenic Tumors / Fibroma Type of study: Diagnostic study Limits: Child / Humans / Male Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: Fluminense Federal University/BR / Institute of Orthopedics and Trauma/BR / University Gama Filho/BR

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Full text: Available Index: LILACS (Americas) Main subject: Tooth, Unerupted / Maxillary Neoplasms / Odontogenic Tumors / Fibroma Type of study: Diagnostic study Limits: Child / Humans / Male Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: Fluminense Federal University/BR / Institute of Orthopedics and Trauma/BR / University Gama Filho/BR