title: [Image of the month. Black villous tongue].
authors.affiliation: Service de Dermatopathologie, CHU de Liège, Belgique.
authors.forename: G
authors.initials: G
authors.lastname: Szepetiuk
authors.forename: C
authors.initials: C
authors.lastname: Piérard-Franchimont
authors.forename: G E
authors.initials: GE
authors.lastname: Piérard
mesh_terms: D000278:Administration, Buccal; D006801:Humans; D007641:Keratolytic Agents / Q000008:administration & dosage; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects; D014064:Tongue, Hairy / Q000175:diagnosis* / Q000628:therapy; D016896:Treatment Outcome; D014212:Tretinoin / Q000008:administration & dosage
chemical_list: D007641:Keratolytic Agents; D014212:Tretinoin