Small bowel carcinoma: a difficult diagnosis.
D000230:Adenocarcinoma / Q000175:diagnosis*; D004379:Duodenal Neoplasms / Q000175:diagnosis*; D006801:Humans; D007580:Jejunal Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D011379:Prognosis