title: Deep Beneath the Skin: An Unusual Causa of Melena.
authors.affiliation: Serviço de Gastroenterologia, Instituto Português de Oncologia Francisco Gentil, Porto, Portugal.
authors.forename: Inês
authors.initials: I
authors.lastname: Pita
authors.affiliation: Serviço de Gastroenterologia, Instituto Português de Oncologia Francisco Gentil, Porto, Portugal.
authors.forename: Pedro
authors.initials: P
authors.lastname: Bastos
authors.affiliation: Serviço de Gastroenterologia, Instituto Português de Oncologia Francisco Gentil, Porto, Portugal.
authors.forename: Mário
authors.initials: M
authors.lastname: Dinis-Ribeiro
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D001706:Biopsy; D059248:Chemoradiotherapy; D018450:Disease Progression; D004379:Duodenal Neoplasms / Q000737:chemistry / Q000150:complications / Q000556:secondary* / Q000628:therapy; D016099:Endoscopy, Gastrointestinal; D017809:Fatal Outcome; D006801:Humans; D007150:Immunohistochemistry; D058965:MART-1 Antigen / Q000032:analysis; D008297:Male; D008545:Melanoma / Q000737:chemistry / Q000150:complications / Q000556:secondary* / Q000628:therapy; D008551:Melena / Q000209:etiology*; D012878:Skin Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000628:therapy; D013274:Stomach Neoplasms / Q000737:chemistry / Q000150:complications / Q000556:secondary* / Q000628:therapy; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor; D058965:MART-1 Antigen; C548667:MLANA protein, human