Feline lymphoma encompasses multiple subtypes with very different prognoses and treatment approaches affecting welfare decisions.
Lymphoma treatment decisions are welfare-sensitive and depend critically on subtype. Small cell lymphoma treatment is easy, inexpensive, and provides years of good quality life - a compelling welfare argument for treatment. High grade lymphoma carries a poor prognosis even with aggressive chemotherapy, raising quality-of-life questions about treatment burden versus benefit. Palliative care approaches using prednisolone can maintain quality life for weeks to months. Honest communication about prognosis enables welfare-centered rather than treatment-centered decision making.