Dog Lymphoma Treatment Options and Welfare Planning

Lymphoma is one of the most common cancers in dogs and one of the most responsive to treatment. Chemotherapy achieves remission in the majority of cases, significantly extending quality life, and welfare-centred decision-making balances treatment burden against time gained.

Key Facts

Multicentric lymphoma — affecting peripheral lymph nodes — is the most common form, representing 80 per cent of canine lymphoma cases
The CHOP protocol — cyclophosphamide, doxorubicin, vincristine, and prednisolone — achieves complete remission in 60 to 90 per cent of B-cell lymphoma cases
Median survival with CHOP chemotherapy is 12 to 14 months, compared with 4 to 6 weeks with prednisolone alone
Dogs generally tolerate chemotherapy better than humans, with fewer than 5 per cent experiencing treatment-limiting side effects
T-cell lymphoma has a significantly poorer prognosis than B-cell disease and should be immunophenotyped before initiating treatment

Welfare Considerations

Dogs with untreated lymphoma deteriorate rapidly: lymph node enlargement compresses airways and oesophagus, causing respiratory distress and difficulty swallowing. Treated dogs in remission typically maintain near-normal quality of life with retained appetite, activity, and social engagement. Welfare-centred decision-making discusses treatment intensity against the time benefit clearly, including the option of prednisolone-only palliative management for owners unable to undertake chemotherapy. Regular quality-of-life assessment throughout treatment tracks the balance between treatment burden and benefit, guiding decisions about dose modification or treatment cessation.

What You Can Do

Seek urgent veterinary referral if your dog has rapidly enlarging lymph nodes or breathing changes that might suggest lymphoma
Request immunophenotyping before starting treatment — B-cell versus T-cell status significantly alters prognosis and treatment planning
Discuss all treatment options transparently with an oncologist, including palliative management and hospice care as legitimate choices
Monitor food intake, activity, and comfort daily during treatment and report any changes to your veterinary team promptly
Use a validated quality-of-life assessment tool throughout the treatment period to track wellbeing and guide treatment decisions