Abstract：
:Adenomatoid Odontogenic Tumour (AOT) is a relatively uncommon odontogenic lesion and few studies describing its cytokeratin profile have been reported in the English-language literature. Thirty-nine cases of AOT from three Oral Diagnosis services (Brazil, Mexico and Guatemala) were studied, considering their clinical, radiographic, and histological features and immunohistochemical expression of cytokeratins (AE1/AE3, 34betaE12, CK1, CK5, CK6, CK7, CK8, CK10, CK13, CK14, CK16, CK18, and CK19), vimentin and Ki-67. Sixty five percent of cases affected women, anterior maxilla was the preferred site and radiographically most cases showed unilocular radiolucency with well defined sclerotic borders. Calcifying epithelial odontogenic tumour (CEOT)-like areas were found in 36 out of 39 cases, and 10 cases showed positivity for Congo red in polarized light. All cases were positive for AE1/AE3, 34betaE12, CK5, CK14 and CK19. CEOT-like areas were negative for CK 19. Vimentin was also expressed in 27 cases and this profile may indicate the existence of a variable phenotype in certain areas of the tumour. There were no recurrences after surgical treatment, and this can be related to the low proliferative activity observed in all cases with Ki-67 marker.
journal_name
Oral Oncoljournal_title
Oral oncologyauthors
Leon JE,Mata GM,Fregnani ER,Carlos-Bregni R,de Almeida OP,Mosqueda-Taylor A,Vargas PAdoi
10.1016/j.oraloncology.2005.04.008subject
Has Abstractpub_date
2005-09-01 00:00:00pages
835-42issue
8eissn
1368-8375issn
1879-0593pii
S1368-8375(05)00121-1journal_volume
41pub_type
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