Intestinal lymphoma in cats exists as two distinct forms with dramatically different welfare outlooks. Understanding the difference helps owners make appropriate treatment decisions.
The distinction between small and large cell feline intestinal lymphoma is one of the most clinically significant in veterinary oncology from a welfare perspective. Small cell lymphoma is a slowly progressive condition that responds beautifully to gentle oral medication with cats often achieving years of good quality remission on minimal treatment burden. Large cell lymphoma is an aggressive, rapidly fatal condition where intensive treatment prolongs suffering rather than meaningfully extending quality life. Accurate diagnosis through biopsy rather than treating presumptively determines whether treatment offers real welfare benefit. Owners should understand the form their cat has before committing to therapy.