Lymphoma is a malignant tumor originating from the lymphatic tissue. It can occur in the lymph nodes, spleen, liver, gastrointestinal tract, skin, central nervous system, and other organs.

Lymphoma in dogs

• One of the most common tumors in dogs.
• The most common form is multicentric (involvement of several lymph nodes).
• Other forms: alimentary (gastrointestinal), mediastinal, cutaneous, extranodal.

Diagnosis

• - Clinical examination (enlarged lymph nodes, weakness, weight loss).
• - Cytology (fine needle aspiration).
• - Histopathology.
• - Immunohistochemistry or PCR to determine the type (B- or T-cell lymphoma).
• - Complete blood count, ultrasound, X-ray, bone marrow biopsy.

Treatment

• Chemotherapy (cyclophosphamide, doxorubicin, vincristine, lomustine, prednisone, etc.), chemotherapy protocol and frequency of use depends on the form of lymphoma (localization).
• Steroids (prednisolone, dexamethasone) - as a palliative measure.
• Prognosis: 6-12 months with treatment, 1-2 months without.

Lymphoma in cats

• It is often associated with the leukemia virus FeLV.
• The most common form is alimentary (intestinal lesions), but there are also mediastinal, multicentric, cutaneous, and nasal forms.
• Symptoms: vomiting, diarrhea, shortness of breath, cramps, etc.

Diagnosis

• Similar to dogs.
• Testing for FeLV and FIV is mandatory.

Treatment.

• Chemotherapy (cyclophosphamide, doxorubicin, vincristine, lomustine, prednisone).
• Sometimes - surgery or radiation therapy.
• The prognosis depends on the type of lymphoma and the response to treatment.

Prevention.

• Vaccination against FeLV in cats.
• Regular preventive examinations.
• Timely treatment in case of symptoms.

Prognosis:

• Depending on the location, form, stage, and treatment method chosen, 2-24 months.