Unusual imaging appearance of unicystic ameloblastoma

Abstract

Unicystic ameloblastoma (UA) refers to those cystic lesions that show clinical, radiographic, or gross features of a mandibular cyst, but on histologic examination show a typical ameloblastous epithelium lining part of the cystic cavity, with or without luminal and/or mural tumor growth. It accounts for 5-15% of all intraosseous ameloblastomas. We report a case of UA in a 35-year-old female with an unusual large multilocular (tennis racket) appearance on the right body of mandible and illustrate the importance and complexity of differential diagnosis with a brief review of recent literature.

Is Conservative Surgical Treatment Sufficient to Treat Unicystic Mural Ameloblastoma in Infant?

“…10 It occurs in all ages, but mostly in the third decade. 1 Mural unicystic ameloblastoma is more aggressive and has a higher recurrence rate than the other 2 types but has less recurrence rate than the multicystic ameloblastoma. 6 However, 3 subtypes of unicystic ameloblastoma have been reported in the same case.…”

“…1 Development of position-induced plagiocephaly and brachycephaly is caused by gravitational forces exerted on the infant cranium in the supine position over a long period. 2,3 These forces can be caused by factors such as unilateral positioning, a preferred sleeping position, or restricted head rotation.…”

“…It occurs in 3 different variants, which are solid or multicystic, unicystic, and peripheral. 1 Solid or multicystic ameloblastoma often shows aggressive growth and a high recurrence rate after conservative surgical treatment such as curettage. 2 This type of ameloblastoma can also develop into a malignant tumor such as ameloblastic carcinoma.…”

Mural Unicystic Ameloblastoma mimicking Odontogenic Cyst

“…[ 1 2 ] The ratio of occurrence in maxilla and mandible is 1: 7 (dentigerous type) and 1: 4.7 (non-dentigerous type). [ 7 ]…”

Acanthamatous Ameloblastoma of the Body of the Mandible: Case Report

“…Odontogenic cysts should be considered in differential diagnosis of unicystic ameloblastoma because of similar clinical behavior and radiological appearence. Histopathological examination is necessary for definitive diagnosis (2). Follicular, plexiform, desmoplastic, acanthamatous, basaloid and papilliferous types are the described histopathological patterns for the ameloblastomas (3).…”