Simultaneous occurrence of keratocystic odontogenic tumor and ameloblastoma in the mandible: A case report

Synchronous occurrence of odontogenic keratocyst and ameloblastoma: A case report and review of the literature

Odontogenic keratocyst (OKC) and ameloblastomas are distinct histopathologically diagnosed odontogenic lesions of the oral cavity. Both are primarily located in the posterior regions of the mandible, however, they can involve the maxilla as well. The occurrence of both an OKC and ameloblastoma in a patient is very uncommon. This case demonstrated such a lesion in the mandible of a 57 years old female. The diagnostic work-up and features of both lesions are illustrated with special focus on histopathological variances distinguishing OKC from ameloblastoma with the support of immunohistochemistry. This case highlights the importance of identifying accurate diagnoses for such lesions which may prompt clinical implications. Clinico-pathologic understanding of both lesions signifies the need for careful management plan and prevention of recurrence. Previously reported simultaneous occurrences of odontogenic cysts and/or tumors in the oral cavity are also reviewed.

A Rare Simultaneous Occurrence of Odontogenic Keratocyst and Unicystic Ameloblastoma in Mandible: A Case Report

Odontogenic Keratocyst (OKC) and Ameloblastomas are slow growing benign odontogenic lesions that primarily occur in the molar region of the mandible. Clinically and radiographically both ameloblastoma, especially the Unicystic ameloblastoma and OKC are indistinguishable due to the similar location of occurrence and the age of patients. It is very rare for these lesions to arise simultaneously in a patient's jaw. The co-occurrence of Ameloblastomas with odontogenic cysts or other odontogenic lesions (histologically in a single lesion)have already been described as combined or hybrid lesions. There are very few reported cases in the English literature for simultaneous occurrence of Unicystic Ameloblastoma and OKC as completely distinct lesions. Here we present such a rare case of the simultaneous occurrence of OKC and ameloblastoma in the posterior region of the mandible of a 22-year-old male in close relation.