title: Pigmented lesions of the oral cavity.
abstract: The factors that produce dark pigmentation of the oral soft tissues are described. Examples are given of aberrations of the melanin-forming cells in the oral cavity and a new case of oral blue nevus is added to the literature. A unique case of localized melanosis of the tongue is described clinically and histopathologically.
mesh_terms: D000328:Adult; D002244:Carbon / Q000009:adverse effects*; D002648:Child; D005260:Female; D005882:Gingival Diseases / Q000209:etiology*; D006108:Graphite / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008543:Melanins; D008548:Melanosis / Q000473:pathology*; D009059:Mouth Diseases / Q000473:pathology; D009061:Mouth Mucosa / Q000187:drug effects / Q000473:pathology; D009062:Mouth Neoplasms / Q000473:pathology; D009508:Nevus, Pigmented / Q000473:pathology*; D010157:Palatal Neoplasms / Q000473:pathology*; D010858:Pigmentation / Q000187:drug effects; D014060:Tongue Diseases / Q000473:pathology*
chemical_list: D008543:Melanins; D002244:Carbon; D006108:Graphite