Mar 22 2020

Adenomatoid Odontogenic Tumour of the Maxilla – A Case Report with Review. 1 Reader. Dept of Oral Medicine and Radiology. SRM Dental College. Adenomatoid odontogenic tumour is a benign (hamartomatous), noninvasive lesion with slow but progressive growth. The 3 variants — follicular, extrafollicular . Adenomatoid odontogenic tumor is a hamartomous benign neoplasia of odontogenic origin. It appears mostly in young patients and females, the maxillary.

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The AOT is over two times more located in the maxilla than in the mandible and the anterior jaw is much more affected than the posterior area.

However, the rare peripheral variant occurs primarily in the gingival tissue of tooth-bearing areas [ 9 ]. There was no evidence of recurrence and no apical resorption of the adjacent teeth could be observed Fig. Half a year after surgery a clinical and radiographic follow-up examination was performed. The epithelium is in the form of whorled masses of spindle cells as well as sheets and plexiform strands.

Adenomatoid Odontogenic Tumour: Review and Case Report

Calcification is sometimes seen and may be extensive Fig. Beyond it our case supports the above mentioned general description of AOTs. The postoperative course was uneventful. Treatment and prognosis Conservative surgical enucleation is the treatment modality of choice. Please review our privacy policy. There are no resorption of the root apices. Under general anesthesia the lesion was enucleated and afterwards filled with pelvic spongiosa.

Cytokeratins in epithelia of odontogenic neoplasms. The tumor may be partly cystic, and in some cases the solid lesion may be present only as masses in the wall of a large cyst [ 14 ].

Odontogenic tumors and neoplastic-like changes of the jaw bone. The radiographic findings of AOT frequently resemble other odontogenic lesions such as dentigerous cysts, calcifying odontogenic cysts, calcifying odontogenic tumors, globule-maxillary cysts, ameloblastomas, odontogenic keratocysts and periapical disease [ 10 ].


The tumor is most often diagnosed in the second decade of life and women are about twice as many affected than men. Interestingly, Takahashi et al.

Author information Article notes Copyright reciew License information Disclaimer. AOT should be considered in the differential diagnosis of radiolucent jaws swelling, although its low incidence. Rings of columnar cells give rise to duct-like appearance Fig.

Italian Journal of Maxillofacial Surgery 2008 December;19(3):131-6

Racial pigmentation probably plays an important role in such cases [ 1617 ]. The histopathological report after surgery confirmed the diagnosis of AOT. Adenomatoid odontogenic tumor AOT is a relatively uncommon distinct odontogenic neoplasm that was first described by Steensland in [ 1 ]. Ovontogenic the follicular variant shows a well-circumscribed unilocular radiolucency associated with the crown and often part of the root of an unerupted tooth, the radiolucency of the extrafollicular type is located between, above or superimposed upon the roots of erupted permanent teeth [ 3 ].

This article describes two cases concerning two young female patients who presented at our Department in the period comprised between December and February with an asymptomatic swelling with a slowly growing lesion: All authors disclaim any financial or non-financial interests or commercial associations that might pose or tumoe a conflict of interest with information presented in this manuscript.

Adenomatoid odontogenic tumor of the mandible: review of the literature and report of a rare case

In Philipsen and Reichart [ 3 ] presented a review based adenpmatoid reports published until which showed some interesting aspects regarding epidemiological figures of this tumor. To acquire additional information about AOT, all reports regarding AOT and cited in “pubmed” since onward were reviewed. For radiological diagnose the intraoral periapical radiograph seems to be more useful than panoramic.


Both patients have been treated under general anesthesia for the removal of the lesions with unerupted tooth. J Clin Pediatr Dent. Displacement of neighbouring teeth due to tumor expansion is much more common than root resorptions.

The surgical treatment of such neoplasm is generally conservative, provided that the removal of the lesion and the curettage of the residual odontogemic are meticulously performed; in these conditions recurrence is extremely rare. The tooth 43 was located on the floor of this process. Remarkably, all variants of AOT show identical histology.

Many different names like adenoameloblastoma, ameloblastic adenomatoid tumor, adamantinoma, epithelioma adamantinum or teratomatous odontoma have been used before to define the lesion currently called AOT. Panoramic radiograph six months after therapy. Nodular aggregates of cells.

Clinical study and evaluation of treatment results. National Center for Biotechnology InformationU. The adenomatoid odontogenic tumour: Indian J Dent Res. Immunhistochemical localization of amelogenin in human odontogenic tumors, using a polyclonal antibody against bovine amelogenin. J Oral Pathol Med. Epidemiology From the early s onwards 65 single cases of AOT excluding case series of more than 10 cases have been published. Received Mar 25; Accepted Aug However, a variety of terms have been used to describe this tumor.

The adenomatoid odontogenic tumour AOT: Abstract Adenomatoid odontogenic tumor AOT is a rare odontogenic tumor which is often misdiagnosed as odontogenic cyst. Review of literature and report of 30 cases from India. Unicystic radiolucent lesion in odontogenkc lawer right jaw with a comparatively clear demarcation.