Ponce Jb, Lima Hg, Rodrigues Mt, Souza Fg, Lara Vs
Department of Stomatology, Bauru School of Dentistry, University of São Paulo, Brazil.
São Lucas School, Porto Velho, Rôndonia, Brazil.
Hippokratia. 2014 Jan;18(1):83-5.
Unicystic ameloblastoma (UA) is a distinct variant of ameloblastoma displaying a large cystic cavity lining by ameloblastomatous epithelium and can present a wide variety of histologic patterns.
We herein reported an unusual UA occurring in the mandible of a 23-year-old male patient who exhibited luminal, intraluminal and mural patterns, as well as acanthomatous, basal cells and granular cell variants. In addition, hyaline ring granulomas, an extraordinary finding in ameloblastoma, were found. The nature of several microscopic variants in this tumor and the possible significance of their presence have also been discussed.
We believe this to be the first case reported in which a UA displayed multiplicity of histopathological patterns in a single lesion.
单囊性成釉细胞瘤(UA)是成釉细胞瘤的一种独特变体,表现为一个大的囊性腔,内衬成釉细胞瘤样上皮,可呈现多种组织学模式。
我们在此报告一例罕见的UA,发生于一名23岁男性患者的下颌骨,该病例呈现管腔内、管腔内及壁内模式,以及棘皮瘤型、基底细胞型和颗粒细胞型变体。此外,还发现了透明环肉芽肿,这在成釉细胞瘤中是一个特殊发现。本文还讨论了该肿瘤中几种微观变体的性质及其存在的可能意义。
我们认为这是首例报道的单囊性成釉细胞瘤在单个病变中呈现多种组织病理学模式的病例。