Abstract:
:Cribriform areas are common features of both adenoid cystic carcinoma and polymorphous low-grade adenocarcinoma. Both are malignant salivary gland tumors that share similar histologic patterns, but with marked distinct clinical behavior. This study was undertaken to improve the accuracy of the histopathology diagnostic process, using an immunohistochemical panel to differentiate adenoid cystic carcinoma from polymorphous low-grade adenocarcinoma, with special concern to the common cribriform areas shared by these tumors. Three-microm serial sections of these tumors were submitted to the streptavidin-biotin peroxidase immunotechnique against the monoclonal antibodies anticytokeratins 7, 8, 14 and 19, and anti-integrins beta1, beta3, and beta4. In the neoplastic lobules of adenoid cystic carcinoma cribriform type, the spaces were mainly surrounded by cells negative for the cytokeratins and integrins studied. In the solid type of adenoid cystic carcinoma, the microcystic areas were caused by spaces lined by neoplastic luminal cells positive for cytokeratins and presenting integrins concentrated in the apical pole of these cells. The cribriform areas of polymorphous low-grade adenocarcinoma were composed of cords of luminal cells, positive for cytokeratins and showing integrins disposed in a bipolar pattern. We concluded that cribriform areas of adenoid cystic carcinoma and polymorphous low-grade adenocarcinoma are histologically similar, although not identical. Indeed, their cellular composition is distinct and can be distinguishable from one another by the proteins of the cytoskeleton, by the integrins, or both.
journal_name
Ann Diagn Patholjournal_title
Annals of diagnostic pathologyauthors
Araújo VC,Loducca SV,Sousa SO,Williams DM,Araújo NSdoi
10.1053/adpa.2001.29339subject
Has Abstractpub_date
2001-12-01 00:00:00pages
330-4issue
6eissn
1092-9134issn
1532-8198pii
S1092913401092255journal_volume
5pub_type
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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journal_title:Annals of diagnostic pathology
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