title: Clinical characteristics of early oral cancer.
mesh_terms: D002277:Carcinoma / Q000175:diagnosis; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000175:diagnosis; D004919:Erythroplasia / Q000175:diagnosis; D006801:Humans; D007972:Leukoplakia, Oral / Q000175:diagnosis; D009062:Mouth Neoplasms / Q000175:diagnosis*; D011230:Precancerous Conditions; D009626:Terminology as Topic; D013997:Time Factors