title: Test your diagnostic skills. Lichen planus.
authors.affiliation: Department of Dentistry, Sunnybrook Health Sciences Centre, Toronto, Ontario.
authors.forename: N
authors.initials: N
authors.lastname: Blanas
authors.forename: M
authors.initials: M
authors.lastname: DiCarlo
authors.forename: P
authors.initials: P
authors.lastname: Iannucci
authors.forename: R C
authors.initials: RC
authors.lastname: Jordan
mesh_terms: D001706:Biopsy; D003937:Diagnosis, Differential; D006801:Humans; D017676:Lichen Planus, Oral / Q000175:diagnosis* / Q000188:drug therapy / Q000209:etiology; D017512:Lichenoid Eruptions / Q000139:chemically induced / Q000175:diagnosis; D008179:Lupus Erythematosus, Discoid / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009061:Mouth Mucosa / Q000473:pathology