Abstract
Calcifying cystic odontogenic tumor (CCOT) is an uncommon benign cystic neoplasm of the jaw that develops from the odontogenic epithelium. It is clinically characterized as a painless—slow-growing tumor that affects the maxilla as well as the mandible, and generally occurs in young adults in the third or fourth decade of life. Herein, we present the case of a 16-year-old Japanese boy who showed a CCOT in the maxillary sinus. Panoramic radiography showed a unilocular lesion in the left maxillary sinus. Computed tomography showed an approximately 5-cm well-defined unilocular expansile lesion with multiple radiopaque calcific specks, arising from the left maxillary alveolar ridge. The lesion was surgically removed, under general anesthesia, and the patient was followed up for 3 years after the surgery, and there have not been any signs of recurrence.
Highlights
The calcifying odontogenic cyst (COC) was first described as a distinct entity by Gorlin et al [1] in 1962
Calcifying cystic odontogenic tumor (CCOT) is an uncommon benign cystic neoplasm of the jaw that develops from the odontogenic epithelium
CCOT is a relatively rare lesion that represents only about 2% of all odontogenic pathological changes in the jaw [5] [6]. It is clinically characterized as a painless-slow-growing tumor, that affects the maxilla as well as the mandible, and generally occurs in young adults in the third or fourth decade of life
Summary
The calcifying odontogenic cyst (COC) was first described as a distinct entity by Gorlin et al [1] in 1962. In 2005, it was classified as a tumor and termed a calcifying cystic odontogenic tumor (CCOT) by the World Health Organization because of its neoplastic behavior [2]. CCOT is normally a painless slow growing tumor and may occur in association with other odontogenic tumors, such as odontomas [3]. CCOT is usually composed of a cystic cavity with a fibrous capsule lined by odontogenic epithelium. Masses of ghost cells may occur in the epithelial lining and these often become may be calcified [2]. This report describes a case of CCOT occupying the maxillary sinus of a 16-year-old Japanese boy
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