title: Rare hybrid odontogenic tumor in a 2-year-old child.
abstract: Hybrid odontogenic tumors are rare conditions that can affect the oral maxillofacial region and usually occur in adults as an asymptomatic swelling. Hybrid odontogenic tumors exclusively involving adenomatoid odontogenic tumor (AOT) and calcifying cystic odontogenic tumor (CCOT) are rare, with only 4 reported cases. In addition, there are only few studies describing the presence of abortive enamel in AOT and, to our knowledge, CCOT was not present in any of them. We described a rare case of AOT associated with CCOT and abortive enamel formation in a 2-year-old child, a condition not well described in the international literature. Secretory cell activity was assessed by periodic acid-Schiff and Congo red stains.
authors.affiliation: Division of Oral Surgery, Department of Clinical Dentistry, Federal University of Ceará, and Division of Oral Surgery, Walter Cantídio University Hospital, Ceará, Brazil.
authors.forename: Eduardo Costa Studart
authors.initials: EC
authors.lastname: Soares
authors.forename: Fábio Wildson Gurgel
authors.initials: FW
authors.lastname: Costa
authors.forename: Ivo Cavalcante Pita
authors.initials: IC
authors.lastname: Neto
authors.forename: Tácio Pinheiro
authors.initials: TP
authors.lastname: Bezerra
authors.forename: Régia Maria
authors.initials: RM
authors.lastname: do Socorro Vidal Patrocínio
authors.forename: Ana Paula Negreiros Nunes
authors.initials: AP
authors.lastname: Alves
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008441:Maxillary Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*; D018333:Odontogenic Cyst, Calcifying / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*