title: Melanin-like pigmentation of the duodenum.
abstract: We report a case of brown-black pigmentation of the duodenum found in an elderly female during endoscopy for unrelated reasons. Melanin-like pigmentation of the duodenum is a rare endoscopic entity of uncertain etiology and significance. Various theories related to the etiology and pathogenesis, as well as histochemical and electron microscopic characteristics, are discussed.
authors.affiliation: Department of Medicine, University of Louisville, Kentucky, USA.
authors.forename: A
authors.initials: A
authors.lastname: Minocha
authors.forename: P K
authors.initials: PK
authors.lastname: Fearneyhough
authors.forename: S A
authors.initials: SA
authors.lastname: McClave
authors.forename: J C
authors.initials: JC
authors.lastname: Parker
mesh_terms: D004378:Duodenal Diseases / Q000378:metabolism / Q000473:pathology*; D004386:Duodenum / Q000378:metabolism / Q000473:pathology; D005260:Female; D006801:Humans; D008543:Melanins / Q000378:metabolism; D008548:Melanosis / Q000473:pathology*; D008875:Middle Aged
chemical_list: D008543:Melanins