title: Slowly enlarging, asymptomatic mass in the upper lip.
abstract: A case of monomorphic adenoma, basal cell variant, is described. The clinician should be aware of this tumor and its histological differential diagnosis so that patients may be treated appropriately.
authors.affiliation: General Practice Residency Program, Hunter Holmes McGuire Medical Center, Richmond, VA.
authors.forename: K F
authors.initials: KF
authors.lastname: Kenny
authors.forename: C D
authors.initials: CD
authors.lastname: Dent
authors.forename: G W
authors.initials: GW
authors.lastname: DeBoom
mesh_terms: D000236:Adenoma / Q000473:pathology*; D000328:Adult; D006801:Humans; D008048:Lip Neoplasms / Q000473:pathology*; D008297:Male