title: An unusual presentation of clear cell odontogenic carcinoma in mandibular anterior region.
abstract: Clear cell odontogenic carcinoma (CCOC) is a rare, potentially aggressive odontogenic epithelial tumor with tendency for recurrence. It was first described as a clinicopathological entity in 1985 and to date only 73 cases has been reported in English literature. A case of CCOC in 64-year-old male patient in mandibular anterior region is presented which when recurred in soft tissue 5 years after wide surgical resection of mandible, revealed a biphasic pattern as against monophasic pattern of primary neoplasm and was unusually associated with primary squamous cell carcinoma, suggestive of hybrid tumor.
authors.affiliation: Department of Oral Pathology, Government Dental College and Hospital Nagpur, Maharashtra, India.
authors.forename: Sindhu M
authors.initials: SM
authors.lastname: Ganvir
authors.affiliation: Department of Oral Pathology, Government Dental College and Hospital Nagpur, Maharashtra, India.
authors.forename: Namrata Yashwant
authors.initials: NY
authors.lastname: Gajbhiye
keywords: Clear cell odontogenic carcinoma; collision tumor; hybrid tumor; odontogenic epithelial tumor