From Diagnosis to Treatment: What to Expect After Your Pet’s Lymphoma Diagnosis

Step 1: Confirming the Diagnosis 

When lymphoma is suspected, the first task is confirming the diagnosis and figuring out the subtype of lymphoma. This matters because the subtype (for example, B-cell vs T-cell in dogs) and other factors can influence treatment and prognosis.

What kinds of tests are done? 

Your veterinarian or oncologist will likely perform a series of tests which typically include: bloodwork, urinalysis, imaging (chest X-rays, abdominal ultrasound), and either a fine needle aspirate (FNA) of an enlarged lymph node or a biopsy. But beyond that, there are more specialized tests that will help refine diagnosis and guide treatment.

Flow cytometry tests help diagnose lymphoma 

Flow cytometry is a lab technique used to examine single cells from a sample, whether it comes from blood, a lymph node, body fluid, or a mass aspirate. It identifies key characteristics of each cell, including its size and any surface markers it displays. This helps determine the immunophenotype (B-cell vs T-cell) and other prognostic markers.

The goal of the flow cytometry is to help your vet know which type of lymphoma your pet has, which will allow you to more accurately choose a treatment method for your pet and expectations with therapy or not. 

You can learn more about the different types of lymphoma in DOGS here.

And the different types of lymphoma in CATS here.

Another diagnostic test for lymphoma is PARR

PARR, or Polymerase chain reaction for Antigen Receptor Rearrangements, helps differentiate whether a lymphocyte population is a neoplastic clone (lymphoma) or a reactive (benign/non-cancerous) population. It helps confirm the diagnosis when things are ambiguous. For example, if your pet’s pathology results are “suspicious but not definitive,” PARR can help answer the question of “is it really lymphoma or something else?” 

With lymphoma affecting primarily your pet’s immune system, it’s not uncommon for symptoms of lymphoma to overlap with other possible illnesses, and it’s important to get the right treatment for what your pet actually has going on.

Why these tests matter 

They help your oncologist get a better picture of your pet’s disease, which helps them predict how the disease might progress and respond to treatment. Knowing more information is always better, the more info that your vet has about what type or subtype of lymphoma your pet has, the more specific the treatment method can be. Some subtypes require a different approach than others or have different expected outcomes. 

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Step 2: Exploring Treatment Options

Once the diagnosis is confirmed, testing to confirm the extent of disease in the body (staging), and subclassified, the next major step is treatment planning. The goal is to give your pet the best possible quality of life—ideally by achieving remission—and as much time as possible while balancing side effects, cost, and your pet’s well-being. 

Key lymphoma treatments 

• Chemotherapy
  
  • This is the standard of care for most forms of lymphoma in both dogs and cats. For dogs in particular, the most common form of lymphoma is multicentric which attacks multiple different lymph nodes throughout the body, making it more important to have a systemic approach to the disease and target multiple places in the body at once. 
  • You can learn more about chemotherapy options for DOGS and for CATS here.
• Steroids 
  
  • Steroids are not usually enough on their own to push an animal into remission, but they can be used for palliative support. You can learn more about palliative care for dogs in this post and for cats in this one. 
• Radiation Therapy
  
  • Radiation may play a role in treatment, especially for certain localized lymphomas such as nasal lymphoma in cats. 
• Surgery 
  
  • While this is often a first line of defense for localized cancers, surgery is not typically used  in lymphoma treatment. Because lymphoma affects the full body, methods that are systemic are more effective in the majority of cases, though there may be some rare or special cases that can benefit from surgery. 
• Precision Therapy 
  
  • For dogs, tools like the one offered by ImpriMed help guide to curate a patient-specific drug selection based on your dog’s individual cancer profile. 

Questions to ask your vet

• What kind of lymphoma does my pet have?
• What protocol do you recommend, and why? 
• What are the goals of treatment (remission or comfort)? 
• What side-effects should I watch for?
• How will I know if treatment is working? 
• How often will we need to visit the clinic, do monitoring, or checkups? 
• If my pet is a dog: would precision tools like ImpriMed’s Personalized Prediction Profile apply here to help choose drugs effectively? 

By proactively asking these questions, you’ll be more empowered to participate in decision making. 

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Step 3: Your first Oncology Visit & Precision Tools for Dogs

Once you are sitting in the oncologist’s office you may start to feel a bit overwhelmed, but being prepared before coming in can help you feel more confident and grounded throughout this journey.  

What to expect at your first oncology visit

You’ll go through your pet’s medical history and any referral notes or information that your primary vet has sent over, as well as do any additional diagnostic testing that your oncologist feels would help them develop a plan for your pet. At this time, you’ll be able to discuss any concerns or questions that you have about treatments, timelines, costs, or how the diagnosis and treatment will affect your pet’s routine. The oncologist will then develop a treatment plan with your pet’s diagnosis and your concerns in mind. 

You can learn more about what to expect from your first visit at the oncologist office for dogs here and for cats here.

Precision Medicine for Dogs: ImpriMed’s Personalized Prediction Profile

In the world of canine lymphoma, one of the newer developments is the role of AI-driven precision tools. Imprimed offers a Personalized Prediction Profile, which uses laboratory techniques and AI to analyze your dog’s cancer cells and predict which chemotherapy drugs are most likely to work the best for that specific patient. While this service is veterinarian-facing (so your oncologist will integrate the results), as a pet parent you can ask your vet if your dog is eligible. A Personalized Prediction Profile represents an evolving frontier of veterinary oncology: more personalization in drug choice rather than one-size-fits-all approaches based on past patients. 

You can find an oncologist near you that is already partnered with ImpriMed’s program here.

Or you can learn how to get your oncologist involved here.

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Step 4: Preparing for Treatment —Costs, Support, and Home Care

Facing your pet’s lymphoma diagnosis can feel overwhelming, both emotionally and financially. But with preparation and support you can navigate this chapter with confidence and compassion.

Understanding Treatment Costs 

Cancer care for pets can be expensive, but knowing what to expect helps you plan ahead. Typical costs include: 

• Diagnostic tests (Flow, PARR, imaging, bloodwork)
• Oncology consultations and chemotherapy sessions
• Monitoring visits for bloodwork or imaging
• Supportive medications (anti-nausea, appetite boosters, etc.)
• Hospitalization or precision tools (for dogs, ImpriMed’s Personalized Prediction Profile adds value and precision)

Costs vary based on your pet’s species, treatment plan, and location. If you have pet insurance, review your policy to see what’s covered—especially for diagnostics, chemotherapy, and pre-existing condition exclusions. 

Emotional & Community Support 

A lymphoma diagnosis affects your whole household. It’s common to feel stressed, uncertain or alone—but you don’t have to go through it by yourself. You can join pet cancer support communities online or in person, or look for financial aid offerings to alleviate some of the monetary stress. 

You can learn more about different ways that you can get support during your pet’s cancer journey here.

Home Care During Chemotherapy

Once treatment begins, your role at home is vital. Keep track of your pet’s appetite, weight, energy, and bathroom habits. If you notice vomiting, diarrhea, or lethargy, contact your vet—early communication of negative side effects can prevent complications. 

Pets typically tolerate chemotherapy better than humans, especially since the treatment is generally developed with the patient’s comfort level in mind rather than the aggressive approach to the disease that many human chemotherapy protocols follow. Mild side effects can occur in some cases, so be sure to follow your oncologist's instructions and ask questions about any concerning behaviors or reactions in your pet while undergoing treatment. 

Some things to keep in mind as you take care of your pet at home between appointments. 

• Keep your pet hydrated and fed; ask your vet about appetite stimulants if needed. 
• Create a calm, clean, low-stress environment—especially for cats.
  Offer light exercise or play as tolerated to keep them mentally and physically active. 
• Regularly assess your pet’s quality of life: are they still enjoying their daily activities? If not, talk with your vet about adjusting the treatment plan. 

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Moving Forward with Hope and Knowledge 

A lymphoma diagnosis for your dog or cat is a serious experience, but it’s not a hopeless one. With the right diagnostic tools, the right oncology partner, tailored treatment plans, and your committed care at home—there is hope. Remember: while lymphoma is not “curable” the goal is quality of life, meaningful time, comfort, and peace of mind for both you and your pet.

Learn more about how ImpriMed can help your dog or cat on their lymphoma journey here.