title: Pseudomelanosis duodeni: an unusual finding from upper gastrointestinal endoscopy.
authors: Department of Gastroenterology, Changhua Christian Hospital, Changhua, Taiwan ROC.
authors: Hsu-Heng
authors: HH
authors: Yen
authors: Yang-Yuan
authors: YY
authors: Chen
authors: Maw-Soan
authors: MS
authors: Soon
mesh_terms: D004378:Duodenal Diseases / Q000175:diagnosis* / Q000473:pathology*; D016099:Endoscopy, Gastrointestinal; D006651:Histocytochemistry; D006801:Humans; D008297:Male; D008548:Melanosis / Q000175:diagnosis* / Q000473:pathology*; D008875:Middle Aged