Calcifying Odontogenic Cyst Associated with an Orthokeratinized Odontogenic Cyst

Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, and Odilon Behrens Hospital, Belo Horizonte, MG, Brazil.
Head and Neck Pathology 12/2008; 2(4):324-7. DOI: 10.1007/s12105-008-0072-3
Source: PubMed


Odontogenic tumors composed of two or more distinct types of lesions are unusual. In this paper, a case of an odontogenic lesion characterized by simultaneous occurrence of areas of calcifying odontogenic cyst (COC) and orthokeratinized odontogenic cyst (OOC) is described. The lesion was asymptomatic and presented at the radiographic examination as a unilocular well-delimited radiolucency extending from left incisor to right premolar area in the mandible. To date, this is the first report of COC associated with an OOC.

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    • "According to the new WHO classification in 2005, COC has now been reclassified as calcifying cystic odontogenic tumor (CCOT) [6]. It often occurs in association with other odontogenic tumors such as ameloblastoma and complex odontoma [7]. "
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    ABSTRACT: Calcifying odontogenic cyst is considered as a rare lesion and accounts for 1% of jaw cysts. It represents a heterogeneous group of lesions which exhibit a variety of clinicopathologic and behavioral features. It has been categorized as cyst and neoplasm. Even after several classification and subclassification, COC remains an enigma. WHO classification 2005 has reclassified the lesion as calcifying cystic odontogenic tumor (CCOT). Ameloblastomatous COC is a rare variant which is not much described in the literature. This report describes one such case which was large multicystic, involved the coronoid and condylar process of the mandible, and treated by subhemimandibulectomy. The case was recurrence free even after 1 year of followup.
    10/2013; 2013(2):407656. DOI:10.1155/2013/407656
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    Egyptian dental journal 01/2011; 57:773-781.
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    ABSTRACT: The calcifying cystic odontogenic tumor (CCOT) simultaneously occurring with other lesions at different locations in the same patient is rare. We report a patient with CCOT associated with an odontoma, a supernumerary tooth, and a dentigerous cyst simultaneously occurring in the maxilla. Cone-beam computed tomography (CBCT) images showed a well-defined expansile lesion with internal calcification, high-density masses surrounded by low-density area, and a supernumerary tooth at the anterior maxilla. Posterolaterally to these lesions, an embedded canine with pericoronal radiolucency was detected. Histopathologic examination revealed a CCOT associated with an odontoma, a supernumerary tooth, and a dentigerous cyst of the embedded canine. Enucleation was performed, and a 2-year postoperative follow-up was uneventful. CBCT was useful in giving the differential diagnosis by depicting internal calcification of CCOT, and in revealing the extent and complex relationship of these lesions.
    03/2012; 113(3):414-20. DOI:10.1016/j.oooo.2011.09.009
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