The adenomatoid odontogenic tumour: ultrastructure of tumour cells and non-calcified amorphous masses

Journal of Oral Pathology & Medicine : Official Publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology
Hans Peter Philipsen, Peter A Reichart

Abstract

The ultrastructure of tumour cells and tumour droplets (TD, non-calcified amorphous masses) was studied in three cases of AOT using freshly prepared tissue. The fine structure of the epithelial tumour cells (cell type I-III) corresponded to that of earlier descriptions. The extracellular location of TD was clearly demonstrated. TD were of varying, sometimes bizarre, configuration. Some TD showed a homogeneous matrix; however, in addition most revealed electron-dense plaques. At high magnification, homogeneous types of TD showed only tubular elements; all others revealed granulo-tubular structures. The tubular elements were arranged concentrically. The nature of the TD is discussed and compared to former interpretations. From the present ultrastructural findings, it appears that the TD most probably represent some form of enamel matrix and as such may be considered a type of pre-enamel. Further studies are needed to elucidate the complex structure of the TD-material so characteristic of the AOT.

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Citations

Aug 6, 1999·Oral Oncology·H P Philipsen, P A Reichart
Nov 8, 2005·Head & Face Medicine·Jörg Gk HandschelNorbert R Kübler
Sep 11, 2002·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Hans Peter PhilipsenPeter A Reichart
Feb 6, 2007·Revue de stomatologie et de chirurgie maxillo-faciale·F Farah-KlibiR Zermani
Jan 7, 2016·Journal of the Korean Association of Oral and Maxillofacial Surgeons·Won-Gyo SeoWoo-Yeol Chung
Apr 9, 2016·Annals of Medical and Health Sciences Research·U I BelgaumiP M Bhalinge
Jun 24, 2008·Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons·Spencer KempRandy Todd
Jul 10, 2007·Journal of Oral Pathology & Medicine : Official Publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology·Hans Peter PhilipsenEzekiel Taiwo Adebayo
Dec 20, 2007·Oral and Maxillofacial Surgery Clinics of North America·Gordon M Rick
Dec 1, 2005·Journal of Applied Oral Science : Revista FOB·Marcelo Macedo CriveliniRenata Callestini Felipini
May 1, 1998·Journal of Oral Pathology & Medicine : Official Publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology·M A do Carmo, E C Silva
Mar 13, 2021·Annals of Maxillofacial Surgery·Hirakben B PatelPayal D Mehta

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