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口腔粘膜扁平苔癣是比较常见的一种慢性疾病。许国琪等调查18769人共有2804人曾患九种口腔粘膜疾病,其中有109人罹患扁平苔癣(0.6％)。徐学义等调查15280人,其中有34人罹患扁平苔癣(0.2％)。与Shkler调查5000人中25～30例罹患扁平苔癣(0.5％～0.6％)近似。陈海琼等口腔粘膜病门诊随访的1639例中有640例(39％)扁平苔癣。李辉821例粘膜病历中有159例(19.3％)扁平苔癣。从以上资料可看出口腔粘膜扁平苔癣并非少见。然而扁平苔癣癌变的病例确是少见的。 自Bettmann 1905年首次报告扁平苔癣癌变的病例后,引起了口腔科医师们的重视,相继的报导了不少口腔粘膜扁平苔癣癌变的病例。
Oral mucosal lichen planus is a more common chronic disease. Xu Guoqi survey 18769 people a total of 2804 people had nine kinds of oral mucosal disease, of which 109 people suffering from lichen planus (0.6%). Xu Xueyi et al investigated 15280 people, including 34 people suffering from lichen planus (0.2%). In the 5000 and 5000 Shkler surveys, 25 to 30 patients had lichen planus (0.5% to 0.6%). Chenhai Qiong and other oral mucosal disease clinic follow-up of 1639 cases, 640 cases (39%) lichen planus. Li Hui, 821 cases of mucosal disease in 159 cases (19.3%) lichen planus. From the above data we can see that oral mucosa lichen planus is not uncommon. However, lichen planus cancer is indeed rare cases. Since Bettmann first reported cases of lichen planus cancer in 1905, it has aroused the attention of dentists, have reported a lot of cases of oral mucosal lichen planus cancer.