White patches--innocent or sinister?
Speight
P
P
D003937:Diagnosis, Differential; D006801:Humans; D007972:Leukoplakia, Oral / Q000473:pathology; D009059:Mouth Diseases / Q000473:pathology*; D009062:Mouth Neoplasms / Q000473:pathology*; D011230:Precancerous Conditions / Q000473:pathology*