Multiple myeloma involving the gastrointestinal tract.
D004379:Duodenal Neoplasms / Q000209:etiology*; D006801:Humans; D007082:Ileum; D007414:Intestinal Neoplasms / Q000209:etiology*; D007583:Jejunum; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000150:complications*; D011859:Radiography; D013274:Stomach Neoplasms / Q000209:etiology*