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Tumor odontogênico adenomatóide em mandíbula Tumor odontógeno adenomatoide de la mandíbula Adenomatoid odontogenic tumor in mandible  [cached]
Roberto de Almeida Azevedo,Júnior Bráulio Carneiro,Lúcio Costa Safira Andrade,Carlos Henrique Silveira de Castro
Revista Cubana de Estomatolog?-a , 2011,
Abstract: Tumor odontogênico adenomatóide é uma les o relativamente incomum, que acomete preferencialmente indivíduos do sexo feminino durante a segunda década de vida. Exibe como sítio de predile o a regi o anterior da maxila, é geralmente associado à coroa de um dente incluso. Este trabalho tem o objetivo de apresentar um caso clínico de tumor odontogênico adenomatóide. Este se apresenta localizado em regi o anterior da mandíbula. Pretende-se ainda abordar suas características clínicas, radiográficas e histológicas, além do tratamento cirúrgico conservador de elei o. El tumor odontógeno adenomatoide es una lesión relativamente infrecuente que afecta principalmente a las mujeres durante la segunda década de vida, porque su sitio predilecto es la región anterior de la mandíbula, con una lesión por lo general asociada con la corona del diente. Se reporta un caso de tumor odontógeno adenomatoide en la región anterior de la mandíbula junto con sus resultados clínicos, radiológicos e histológicos así como su tratamiento quirúrgico. Adenomatoid odontogenic tumor is a relatively uncommon lesion, which affects mainly individuals of the female during the second decade due, showing as a site of predilection for the anterior region of the maxilla presenting lesion usually associated with the crown of a tooth incluso. Os authors report a case of an adenomatoid odontogenic tumor in the anterior region of mandible, together with their clinical, radiographic and histological and its surgical treatment.
Study on the origin and nature of the adenomatoid odontogenic tumor by immunohistochemistry
Crivelini, Marcelo Macedo;Soubhia, Ana Maria Pires;Felipini, Renata Callestini;
Journal of Applied Oral Science , 2005, DOI: 10.1590/S1678-77572005000400017
Abstract: the adenomatoid odontogenic tumor (aot) is a clinically benign lesion. discussions about the aot hamartomatous or neoplastic nature, and the probable odontogenic epithelial cell it originates from still exist. this research aimed to study and discuss the subject by the immunohistochemical detection of cytokeratins, laminin, collagen iv, pcna and p53 in 8 tumor samples and 8 dental follicle samples containing reduced enamel epithelium. the results have shown that ck14 labelling indicated differentiation grades for secreting ameloblasts or ameloblasts in the post-secreting stage in the adenomatoid structure of aot. laminin, found on the luminal surface of adenomatoid structures, was compatible with the reduced enamel epithelium during the "protective stage of amelogenesis". pcna specifically labelled the spindled areas and peripheral cords of the aot, indicating that these areas are responsible for tumor growth. after considerations about pathogenesis, the authors suggested that the nature of aot is hamartomatous with histogenesis from the reduced enamel epithelium.
Mural Adenomatoid Odontogenic Tumor in the Mandible - A Rare Case
Komal Khot,,Pavitra A Vibhakar
International Journal of Oral & Maxillofacial Pathology , 2011,
Abstract: Adenomatoid odontogenic tumor is a uncommon benign hamartomatous lesion of odontogenic origin, which affects young individuals, with a female predilection and mainly occurs in the second decade. It is considered as a hamartoma because of its limited size, due to minimal growth potential, and lack of recurrence. The epithelial lining of the odontogenic cyst may transform into an odontogenic neoplasm-like ameloblastoma or Adenomatoid odontogenic tumor. Such combined lesions are rare and must be carefully diagnosed by an oral pathologist so that optimum treatment needs of the patient can be met. We are here reporting a case of cyst associated with Adenomatoid odontogenic tumor in a 17 year old female patient in the mandible, which was clinically diagnosed as dentigerous cyst or unilocular ameloblastoma. This report of a cyst in the mandible associated with an Adenomatoid odontogenic tumor is extremely rare. Combined lesions of such variety are uncommon and hence the importance of grossing and histopathology in such cases should not be undermined.
A Huge Adenomatoid Odontogenic Tumor of Maxilla
Balasundari Shreedhar,Iqbal Ali,Anshita Agarwal,Sarwar Alam
Case Reports in Medicine , 2012, DOI: 10.1155/2012/317341
Abstract: The adenomatoid odontogenic tumor (AOT) is a benign, nonneoplastic (hamartomatous) lesion with a slow progressing growth. It occurs in both intraosseous and peripheral forms. This paper reports the case of a female aged 16 years who presented with a swelling in anterior maxilla; canine was missing, and a supernumerary tooth was present in the mid line. Radiology revealed a well-defined radiolucent area associated with impacted canine and root resorption of adjacent teeth, which was diagnosed histopathologically as AOT. The patient was treated surgically and later rehabilitated with fixed prosthesis.
Tumor odontógeno adenomatoide en región mandibular
Sánchez Cabrales,Ernesto; Vila Morales,Dadonim; Felipe Garmendia,ángel Mario; Serra Ortega,Alain; Torres Gómez de Cádiz,Alma;
Revista Cubana de Estomatolog?-a , 2010,
Abstract: the adenomatoid odontogenic tumor is an uncommon neoplasm derivative of the odontogenic epithelium containing canalicular structures with inductor modifications of variable intensity in the conjunctival tissue. it is a slow growth lesion and no much invasive but that may to be similar to other odontogenic lesions more aggressive including the dentigerous cyst and the ameloblastoma among others. its classical location (upper canine area) guides us to diagnosis and its duct histological pattern is very typical of this tumor. other tumors included in this group are the ameloblastic fibroma, the ameloblastic odontoma, the calcified odontogenic cyst and composed and complex odontomas. this group of lesions may or not to have formations of hard tissue inside. thus, authors present the case of a patient presenting with this type of tumor making a histopathology study, a literature review on this benign odontogenic tumor and its clinical radiographic features, treatment, as well as the differential diagnoses to be into account.
Adenomatoid odontogenic tumor - a rare cause of jaw swelling
Nigam, Sonu;Gupta, Sanjeev Kumar;Chaturvedi, K. Uma;
Brazilian Dental Journal , 2005, DOI: 10.1590/S0103-64402005000300015
Abstract: adenomatoid odontogenic tumor (aot) is an uncommon tumor of odontogenic origin, characterized histologically by the formation of ductlike structures with amyloid-like deposits. histogenesis of aot is still uncertain and it is often considered as a hamartomatous lesion rather than a true neoplasm. aot has a benign behavior and conservative surgical enucleation or curettage is sufficient. we report a case of aot in a 15-year-old female who presented with left-sided jaw swelling with tooth resorption. histopathology revealed intraosseus follicular variant of aot. a brief review of literature is also discussed.
Adenomatoid odontogenic tumor - hamartoma/cyst or true neoplasm; a Bcl-2 immunohistochemical analysis.
Anand Tegginamani S,Shailesh Kudva,Shruthi D K,Karthik B
Indian Journal of Dental Advancements , 2012,
Abstract: Objectives: Adenomatoid odontogenic tumor (AOT) is an uncommon tumor of odontogenic origin, characterized histologically by the formation of ductlike structures with amyloidlike deposits. Histogenesis of AOT is still uncertain and it is often considered as a hamartomatous lesion rather than a true neoplasm. Aim of this study was to analyse the usefulness of detecting important apoptosis in assessing the biological potential of lesion and analyze the expression of Bcl-2 in AOT. Methods and Material: Five formalin fixed paraffin embedded blocks of adenomatoid odontogenic tumor were included in the study and were analysed for Bcl-2 protein is characterized by its ability to inhibit apoptosis. Results;The immunoreactivity for Bcl-2 protein was present in most of the epithelial cells of AOTs. Four of the five AOTs had moderate positivity; one was poorly stained for IHC. Conclusions: adenomatoid odontogenic tumor behaves more aggressively than in most cases that rules out AOT is a cyst. The same activating mutation that causes adenomatoid odontogenic tumor also causes hybrid odontogenic tumors, which is a neoplasm. Thus, based on currently available evidence with the literature and the findings in the present study, it can be considered adenomatoid odontogenic tumor to be a true neoplasm rather than a hamartoma/cyst.
Adenomatoid odontogenic tumor of the mandible: review of the literature and report of a rare case
J?rg GK Handschel, Rita A Depprich, André C Zimmermann, Stefan Braunstein, Norbert R Kübler
Head & Face Medicine , 2005, DOI: 10.1186/1746-160x-1-3
Abstract: Adenomatoid odontogenic tumor (AOT) is a relatively uncommon distinct odontogenic neoplasm that was first described by Steensland in 1905 [1]. However, a variety of terms have been used to describe this tumor. Unal et al [2] produced a list containing all nomenclatures for AOT reported in the literatures. 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. In 1999 Philipsen and Reichart [3] presented a review based on reports published until 1997 which showed some interesting aspects regarding epidemiological figures of this tumor. Since then numerous case reports of AOT have been published.From the early 1990s onwards 65 single cases of AOT (excluding case series of more than 10 cases) have been published. The mean age was 13.2 years (range 3 until 28 years) and the female:male ratio was 2.3 : 1. The AOT was predominantly found in the upper jaw (maxilla:mandible = 2.6 : 1). Regarding the various case series published in the literature [e.g. [4-8]] and comparing these data with the single case reports mentioned above, it has to be reasoned that the AOT has a prevalence of odontogenic tumors between 1.2% in caucasian [5] and 9% in black african patients [4]. The tumor is most often diagnosed in the second decade of life and women are about twice as many affected than men. 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. According to Philipsen and Reichart [3] the AOT appears in three clinico-topographic variants: follicular, extrafollicular and peripheral. The follicular and extrafollicular variants are both intrabony and account for approximately 96% of all AOTs of which 71% are of follicular type.Clinical features generally focus on complaints regarding a missing tooth. The lesion usually present as asymptomatic swelling
Adenomatoid odontogenic tumor associated with dentigerous cyst in posterior maxilla: A case report and review of literature  [cached]
John J,John Reena
Journal of Oral and Maxillofacial Pathology , 2010,
Abstract: Adenomatoid odontogenic tumor (AOT)-a benign (hamartomatous) lesion of odontogenic origin-is an uncommon tumor which affects young individuals with a female predominance, mainly in the second decade. This lesion is most commonly located in the anterior maxilla and is usually associated with an impacted canine tooth. This is a case report of a 39-year-old female patient presented with a large AOT of the posterior maxilla associated with an impacted second molar - a very rare situation.
Adenomatoid odontogenic tumor associated with dentigerous cyst of the maxillary antrum: A rare entity  [cached]
Sandhu Simarpreet,Narang Ramandeep,Jawanda Manveen,Rai Sachin
Journal of Oral and Maxillofacial Pathology , 2010,
Abstract: Adenomatoid odontogenic tumor (AOT) is an uncommon tumor of odontogenic origin composed of odontogenic epithelium in a variety of histoarchitectural patterns. Most cases are in females and have a striking tendency to occur in the anterior maxilla. However, AOT of the maxillary antrum is extremely rare. A 25-year-old female presented with a large radiolucent lesion associated with the crown of an unerupted canine located in the maxillary antrum, which was clinically diagnosed as dentigerous cyst. The microscopic examination revealed the presence of AOT in the fibrous capsule of a dentigerous cyst. Very few cases of AOT associated with dentigerous cyst have been reported till date. A case of gigantic AOT that occupied the maxillary sinus and associated with dentigerous cyst is described. Also, an attempt has been made to determine whether the AOT derived from the dentigerous cyst could represent a distinct hybrid variety.
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