Primary lymphomas of the human gastrointestinal tract.
D000367:Age Factors; D006801:Humans; D007414:Intestinal Neoplasms / Q000453:epidemiology / Q000473:pathology*; D008223:Lymphoma / Q000453:epidemiology / Q000473:pathology*; D013274:Stomach Neoplasms / Q000453:epidemiology / Q000473:pathology*