Lymphoma in the stomach of dogs is perhaps better than in the small intestine, but not as good as in the colon or rectum. The latter two sites have been associated with longer survivals (sometimes very long). The stomach and small intestine locations have been historically much worse prognostically. One study found a median survival of only 13 days for dogs with gastrointestinal lymphomas. As with all lymphomas, outcome often depends on grade. Low grade disease can do much better.
