title: Graphite tattoo: report of a case and differential diagnosis.
abstract: A case report underlining the necessity of the biopsy procedure for a pigmented lesion of unknown origin. A female patient was referred for evaluation of a pigmented lesion on the facial keratinized gingiva coronal to the free gingival margin above tooth No. 7. An excisional biopsy revealed a graphite tattoo. A discussion and differential diagnosis of pigmented lesions follows.
authors.affiliation: Department of Periodontics, Naval Dental Center, Long Beach, CA 90822.
authors.forename: C R
authors.initials: CR
authors.lastname: Anderegg
authors.forename: M B
authors.initials: MB
authors.lastname: Lyles
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D005882:Gingival Diseases / Q000175:diagnosis*; D006108:Graphite; D006801:Humans; D008548:Melanosis / Q000175:diagnosis; D010859:Pigmentation Disorders / Q000175:diagnosis*; D013653:Tattooing
chemical_list: D006108:Graphite