title: PRE-CANCEROUS CHANGES IN THE ORAL CAVITY.
mesh_terms: D003581:Cytodiagnosis; D006801:Humans; D007642:Keratosis; D007971:Leukoplakia; D009062:Mouth Neoplasms; D009369:Neoplasms / Q000209:etiology*
keywords: CYTODIAGNOSIS; KERATOSIS; LEUKOPLAKIA; MOUTH NEOPLASMS; NEOPLASM ETIOLOGY