Adenocarcinoma of the duodenum and iron deficiency anaemia.
D000230:Adenocarcinoma / Q000150:complications*; D000328:Adult; D000368:Aged; D000747:Anemia, Hypochromic / Q000175:diagnosis / Q000209:etiology*; D004379:Duodenal Neoplasms / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D009780:Occult Blood