title: Oral pathology quiz. Case number 1. Lichen planus.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D017676:Lichen Planus, Oral / Q000473:pathology*; D008297:Male; D009055:Mouth / Q000473:pathology*; D014059:Tongue / Q000473:pathology