title: Unusual oral leiomyoma in a child: case report.
abstract: OBJECTIVE
  Very few oral leiomyomas have been reported in the literature, especially in children. The aim of this article  was to present a very rare new case of leiomyoma in the chin, in a seven-year-old black male, and to explain its clinical and  histological features.
  
  
  METHODS
  A seven-year-old black male patient presented with a swelling mass of diameter 2.5 x  3.0 cm in the lower anterior area of the chin. The tumor was firm, painless, non-fixed and well-defined, with normal mucosa  overlying it. Fine-needle aspiration prior to surgery was negative. The surgical access was intraoral and the mass was  located under the skin and below the periosteal bone, within the musculature. The histological and immunohistochemical  studies diagnosed an oral leiomyoma. The clinical appearance of leiomyomas is very difficult to differentiate from other  mesenchymal tumors. Histological and immunohistochemical studies were crucial for achieving a definitive diagnosis.  Eighteen months after the excision of the lesion, no signs of recurrence were observed. The successful treatment had several  objectives, including removing the lesion with success and providing the patient with an aesthetic appearance.
authors.affiliation: Oral and Maxillofacial Department, São Leopoldo Mandic Dental Research Institute, Brazil.
authors.forename: D P
authors.initials: DP
authors.lastname: Tacchelli
authors.forename: P C
authors.initials: PC
authors.lastname: Moraes
authors.forename: R G
authors.initials: RG
authors.lastname: Texeira
authors.forename: R P
authors.initials: RP
authors.lastname: Pimenta
authors.forename: M
authors.initials: M
authors.lastname: Bönecker
mesh_terms: D002648:Child; D002680:Chin / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007889:Leiomyoma / Q000473:pathology* / Q000601:surgery; D008297:Male; D009062:Mouth Neoplasms / Q000473:pathology* / Q000601:surgery