title: Pathologic quiz case: a 30-year-old man with a white plaque in the oral mucosa. Smokeless tobacco keratosis.
authors.affiliation: Department of Pathology, James H. Quillen College of Medicine, East Tennessee State University, Johnson City 37614, USA. pragnasheth2005@yahoo.com
authors.forename: Pragna D
authors.initials: PD
authors.lastname: Sheth
authors.forename: George A
authors.initials: GA
authors.lastname: Youngberg
mesh_terms: D000328:Adult; D006801:Humans; D007642:Keratosis / Q000139:chemically induced / Q000473:pathology*; D008297:Male; D009061:Mouth Mucosa / Q000473:pathology; D014030:Tobacco, Smokeless