口底角化病中上皮癌变和癌前病变的发病率增高,近来已为人们所关注。有些报道指出,舌下角化病中的恶变率可高达50％。这种恶变率在红斑中不论其部位如何都是比较高的。对舌下白斑和红斑的治疗是困难的。部分原因是病变广泛、(延伸至舌侧牙龈和舌腹侧面);部分原因是由于其下方解剖结构有唾液 Oral keratosis in epithelial carcinogenesis and precancerous lesions increased, recently has been of concern. Some reports indicate that the rate of malignancy in sublingual keratosis can be as high as 50%. This rate of malignancy in the erythema regardless of its location is relatively high. The treatment of sublingual leukoplakia and erythema is difficult. Partly as a result of a wide range of lesions (extending to the lingual gingiva and the ventral surface of the tongue); in part due to the presence of saliva beneath the anatomy