title: Calcifying epithelial odontogenic tumor.
abstract: The calcifying epithelial odontogenic tumor (CEOT) is a rare benign epithelial odontogenic neoplasm of slow growth that is locally aggressive and tends to invade bone and adjacent soft tissue. Here is reported the case of a 21-year-old female patient with a CEOT in the left mandibular posterior region. The computerized tomography in coronal plane revealed a hypodense lesion in the posterior region of the left mandibular body with hyperdense areas inside and was associated with element 37. An incisional biopsy of the lesion was performed and the histopathological analysis revealed the presence of layers of epithelial odontogenic cells that formed prominent intercellular bridges. A large quantity of extracellular, eosinophilic, and amyloid-like material and an occasional formation of concentric calcifications (Liesegang rings) were also found. The histopathological diagnosis was a Pindborg tumor. Resection of the tumor with a safety margin was performed and after 6 months of follow-up there has been no sign of recurrence of the lesion.
authors.affiliation: Saint Vincent de Paul Hospital, João Pessoa, PB, Brazil.
authors.forename: Olavo Hoston Gonçalves
authors.initials: OH
authors.lastname: Pereira
authors.affiliation: UNIPE, João Pessoa, PB, Brazil ; Department of Odontology, School of Dentistry, University Center of João Pessoa (UNIPE), BR- 230, Km 22, Água Fria, 58053-000 João Pessoa, PB, Brazil.
authors.forename: Laura Priscila Barboza
authors.initials: LP
authors.lastname: de Carvalho
authors.affiliation: Federal University of Rio Grande do Norte (UFRN), Natal, RU, Brazil.
authors.forename: Vilson
authors.initials: V
authors.lastname: Lacerda Brasileiro Junior
authors.affiliation: UFPB, João Pessoa, PB, Brazil ; University of São Paulo (USP), Brazil.
authors.forename: Cláudia Roberta Leite Vieira
authors.initials: CR
authors.lastname: de Figueiredo