Melanin-like pigmentation of the duodenum.
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.
Minocha
A
A
Department of Medicine, University of Louisville, Kentucky, USA.
Fearneyhough
P K
PK
McClave
S A
SA
Parker
J C
JC
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
D008543:Melanins