Inflammatory bowel disease and intestinal lymphoma cause similar signs in cats and require different management approaches. Accurate diagnosis guides welfare-positive treatment.
IBD and intestinal lymphoma both cause chronic discomfort and nutritional compromise that progressively impairs quality of life if untreated. The distinction matters because small cell lymphoma — the most common form in cats — responds extremely well to oral chlorambucil chemotherapy, with many cats achieving remission lasting years. This is a condition where accurate diagnosis enables dramatically better welfare outcomes than empirical treatment. Managing the chronic vomiting and weight loss through appropriate diagnosis and treatment transforms quality of life. Owners should be aware that the cancer diagnosis is not a death sentence for small cell lymphoma — with treatment, cats can have excellent quality of life for extended periods.