Document Type: Case Report


1 Dept. of Oral and Maxillofacial Pathology, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

2 Oral and Maxillofacial Surgen, Tehran, Iran.


Ameloblastomas demonstrate various clinical and microscopic patterns. They typically have been described as possessing three biologic variants including solid, cystic (unicystic) and peripheral, of which about 13% to 21% of all cases are unicystic. Granular cell subtype is a rare variant especially when both the inner and peripheral layers of tumoral islands composed exclusively of eosinophilic granular cells. The purpose of this case report is to present a unique case of cystic ameloblastoma with an unusual radiographic and microscopic pattern affecting a 25-year-old female. Awareness of these rare histopathologic features for oral pathologist is essential to help correct diagnosis.