Peripheral calcifying cystic odontogenic tumour of the maxillary gingiva.
BACKGROUND
Odontogenic tumors are lesions that are derived from remnants of the components of the developing tooth germ. The calcifying cystic odontogenic tumor or calcifying odontogenic cyst is a benign cystic neoplasm of odontogenic origin that is characterized by an ameloblastoma-like epithelium and ghost cells. Calcifying cystic odontogenic tumor may be centrally or peripherally located, and its ghost cells may exhibit calcification, as first described by Gorlin in 1962. Most peripheral calcifying cystic odontogenic tumors are located in the anterior gingiva of the mandible or maxilla.


METHODS
Authors report a rare case of a peripheral calcifying cystic odontogenic tumor of the maxillary gingiva. A 39-year-old male patient presented with a fibrous mass on the attached buccal gingiva of the upper left cuspid teeth. It was 0.7-cm-diameter, painless and it was clinically diagnosed as a peripheral ossifying fibroma. After an excisional biopsy, the diagnosis was peripheric calcifying cystic odontogenic tumor. The patient was monitored for five years following the excision, and no recurrence was detected.


CONCLUSIONS
All biopsy material must be sent for histological examination. If the histological examination of gingival lesions with innocuous appearance is not performed, the frequency of peripheral calcifying cystic odontogenic tumor and other peripheral odontogenic tumors may be underestimated.
Department of Bioscience and Oral Diagnosis, School of Dentristy of São José dos Campos, UNESP-Univ Estadual Paulista, Avenida Francisco José Longo, 777, Jd, São Dimas, São José dos Campos CEP 12245-000, Brazil. analima10@hotmail.com
Ana Paula
AP
de Lima
Dárcio
D
Kitakawa
Janete Dias
JD
Almeida
Adriana Aigotti Haberbeck
AA
Brandão
Ana Lia
AL
Anbinder
D000328:Adult; D005887:Gingival Neoplasms / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008297:Male; D008441:Maxillary Neoplasms / Q000175:diagnosis* / Q000601:surgery; D018333:Odontogenic Cyst, Calcifying / Q000175:diagnosis*; D009808:Odontogenic Tumors / Q000175:diagnosis* / Q000601:surgery