Hybrid Ameloblastoma: Report of a Rare Case and Review of Literature
Synchronized existence of desmoplastic ameloblastoma with follicular ameloblastoma is a rare event. Although reported by many authors, it was first described as a separate entity in 1987 by Waldron and El-Mofty under the heading hybrid ameloblastoma. Here we report a case of hybrid ameloblastoma showing unusual squamous metaplasia. The patient, a 35 year old, Indian woman, had an irregular swelling in lower right front jaw region. Radiographically, a mixed radioopaque / radiolucent lesion were seen in the region of right mandibular lateral incisor to second premolar. Histologically, the lesion was characterized by extensive stromal colonization surrounding compressed islands of odontogenic epithelium along with areas of follicular ameloblastoma. Some follicles showed squamous metaplasia. To best of our knowledge, 25 cases of hybrid ameloblastoma have been reported to date, and the present case is one more addition for the better understanding of this variant of odontogenic tumor.
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