Primary lymphomas of the gastrointestinal tract.
D000328:Adult; D002648:Child; D005770:Gastrointestinal Neoplasms / Q000473:pathology; D006801:Humans; D007414:Intestinal Neoplasms / Q000473:pathology; D008223:Lymphoma / Q000473:pathology; D013274:Stomach Neoplasms / Q000473:pathology