title: Pigmented oral squamous cell carcinoma: a case report and brief review of the literature.
abstract: Melanin impregnation in squamous cell carcinoma (SCC) is an uncommon histological finding. Rare nonmelanocytic entities were previously described as having melanocyte colonization. A 57-year-old Brazilian woman was referred with a pigmented lesion in the lower lip and alveolar ridge with a prior clinical diagnosis of melanoma. The incisional biopsy of the tumor revealed an SCC with strong colonization of melanocytes in the stroma. The authors report a case of an unusual SCC variant and a brief review of the literature.
authors.affiliation: Department of Oral Pathology, Federal University of Pernambuco, Recife, Brazil.
authors.forename: Jurema
authors.initials: J
authors.lastname: Lisboa Castro
authors.forename: Claudia
authors.initials: C
authors.lastname: Cazal
authors.forename: Aguida Cristina
authors.initials: AC
authors.lastname: Gomes Henriques
authors.forename: Jair
authors.initials: J
authors.lastname: Carneiro Leão
authors.forename: Marianne
authors.initials: M
authors.lastname: de Vasconcelos Carvalho
authors.forename: Hilda Texeira
authors.initials: HT
authors.lastname: de Carvalho Dourado
authors.forename: Alessandra A Tavares
authors.initials: AA
authors.lastname: Carvalho
mesh_terms: D001706:Biopsy; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000473:pathology*; D005260:Female; D006801:Humans; D008544:Melanocytes / Q000473:pathology; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000175:diagnosis / Q000473:pathology*; D010858:Pigmentation; D011379:Prognosis