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J Oral Maxillofac Pathol. 2019 Jan-Apr;23(1):19-27. doi: 10.4103/jomfp.JOMFP_13_19.

Oral epithelial dysplasia: Classifications and clinical relevance in risk assessment of oral potentially malignant disorders.

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1
Department of Oral and Maxillofacial Pathology, Ragas Dental College and Hospital, Chennai, Tamil Nadu, India.

Abstract

After more than a decade, the World Health Organization (WHO) published the revised grading system for oral epithelial dysplasia in 2017. The revised classification has changes reflecting our evolution of understanding of the dysplastic process. Although the WHO 2017 three-tier grading system is the gold standard for histological diagnosis of oral potentially malignant disorders, it has certain limitations. Suggestions to overcome these limitations include the use of clinical determinants and molecular markers to supplement the grading system. It has also been suggested that a two-tier system may be more reproducible and clinically translatable for better management. These advances in the understanding of epithelial dysplasia are very important globally and for us in the Indian subcontinent, given the prevalence of habits (tobacco/areca nut) and burden of oral cancer in this part of the world. The following review traces the evolution of the grading system of dysplasia, its relevance and clinical utility.

KEYWORDS:

Cancer; epithelial; grading; histopathology; oral dysplasia; potentially malignant; precancer

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