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Open Access Case Report

Peripheral calcifying cystic odontogenic tumour of the maxillary gingiva

Ana Paula de Lima*, Dárcio Kitakawa, Janete Dias Almeida, Adriana Aigotti Haberbeck Brandão and Ana Lia Anbinder

Author Affiliations

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

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BMC Research Notes 2012, 5:455  doi:10.1186/1756-0500-5-455

Published: 23 August 2012



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.

Case presentation

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.


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.

Odontogenic Cyst; Calcifying; Gingival neoplasms; Odontogenic tumors