2015 Volume 61 Issue 3 Pages 137-146
The current paper summarizes the presentation given at the 39th and 40th Joint Workshop of Four Japanese Oral Societies (Japanese Society of Oral and Maxillofacial Surgeons, Japanese Society for Oral and Maxillofacial Radiology, The Japanese Society for Oral Pathology, and Japanese Academy of Maxillofacial Implants) held in 2013, and retouches by adding further findings after the presentation. In 2005, WHO put a recently advocated SIN (Squamous intraepithelial neoplasia) in the report with conventional dysplasia system, as the diagnostic criteria of early oral cancer and precancerous lesion. In Japan, we have two general rules: "General Rules for Clinical and Pathological Studies on Head and Neck Cancer 2012" and "General Rules for Clinical Studies on Oral Cancer 2010". And recently, The Japanese Society for Oral Pathology presented their original study (2014). Having various criteria for one specific field is causing confusion. Cytological examination is facing a similar phase. Starting with gynecology, a shift from the conventional Papanicolaou classification to Bethesda system that focuses more on presumed diagnosis is being considered. New criteria will be presented for oral cytological diagnosis as well (2015). This paper will cover the transitions of pathological diagnosis and the new movements in cytological examination for oral cancer.
