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.

Author: Shaktigami Tojazahn
Country: China
Language: English (Spanish)
Genre: Spiritual
Published (Last): 5 July 2011
Pages: 496
PDF File Size: 16.65 Mb
ePub File Size: 9.43 Mb
ISBN: 662-9-99066-938-5
Downloads: 60767
Price: Free* [*Free Regsitration Required]
Uploader: Zugar

Therefore, the prognosis is excellent.

Adenomatoid Odontogenic Tumour: Review and Case Report

For illustration a rare case of an AOT in the adenoamtoid is presented. Some tumor droplets show a homogenous matrix whereas most tumor droplets reveal electron-dense plaques [ 15 ].

The adenomatoid odontogenic tumour AOT: Many different names like adenoameloblastoma, ameloblastic adenomatoid tumor, adamantinoma, epithelioma adamantinum or teratomatous adenomstoid have been used before to define the lesion currently called AOT.

This neoplasm is an amartomatous, non-invasive lesion with slow but progressive growing.

J Oral Pathol Med. Whereas cementifying fibromas, dentinomas and compound odontomas demonstrated a positive reaction, all AOT as well as ameloblastomas and calcifying epithelial odontogenic tumors were negative.

One year ago the dentist diagnosed a cyst with a ectopic lower right canine tooth by an x-ray. No root resorption could be observed. Half a year after surgery a clinical and radiographic follow-up examination was performed. 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 ]. The histological typing of the WHO defined the AOT as a tumor of odontogenic epithelium with duct-like structures and with varying degrees of inductive change in the connective tissue.


Published online Aug The tooth 43 was located on the floor of this process. 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 ].

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

Positive reactions for amelogenin in limited areas in AOT are also reported as well as in ameloblasts and in the immature enamel matrix [ 20 ]. Support Center Support Center. Interestingly, there are a few reports about pigmented cells in AOT. Panoramic radiograph before therapy. The AOT was predominantly found in the upper jaw maxilla: Authors have analyzed the last 30 years of international literature and present hereby two cases of a rare neoplasm of the maxillary bones: 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.

Unicystic radiolucent lesion in the lawer right jaw with a comparatively clear demarcation. Conservative surgical enucleation is the treatment modality of choice. The peripheral lesions may show some erosions of the adjacent cortical bone [ 11 ].

Histologically, the tumor is solid and there is a cyst formation Fig. All authors were involved in revising the manuscript critically and have given final approval of the version to be published.


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

This article has been cited by other articles in PMC. Only three cases in Japanese patients are reported in which the recurrence of this tumor occurred [ 24 ]. Rings of columnar cells give rise to duct-like appearance Fig.

From the adenomtoid s onwards 65 single cases of AOT excluding case series of more than 10 cases have been published. Please review our odontovenic policy. Received Mar 25; Accepted Aug Treatment and prognosis Conservative surgical enucleation is the treatment modality of choice. Journal List Head Face Med v. Immunhistochemical localization of amelogenin in human odontogenic tumors, using a polyclonal antibody against bovine amelogenin.

Under general anesthesia the lesion was enucleated and afterwards filled with pelvic spongiosa. Unerupted permanent canine are the theeth most often involved in AOTs. In addition, in one recently reported case MRI was useful to distinguish AOT from other lesions, even if it is difficult on periapical ordinal radiographies [ 10 ].

A case of multiple AOT-like jawbone lesions in a young patient-a new odontogenic entity? Radiologically, he showed tumoor 3 cm unicystic radiolucent image with a comparatively clear demarcation.