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  • Title: Immunophenotypic characterization of lymphomas from the mediastinum of young ferrets.
    Author: Coleman LA, Erdman SE, Schrenzel MD, Fox JG.
    Journal: Am J Vet Res; 1998 Oct; 59(10):1281-6. PubMed ID: 9781462.
    Abstract:
    OBJECTIVE: To determine the phenotype of naturally developing lymphomas in young ferrets. ANIMALS: 10 ferrets with lymphoma. PROCEDURE: Neoplastic tissues were graded histologically according to the National Cancer Institute's Working Formulation for non-Hodgkin's lymphoma and phenotype was determined by means of immunohistochemical staining. A polyclonal anti-human CD3 and a monoclonal anti-human CD79 antibody were used to classify the lymphomas in situ as T-cell or B-cell origin. Specificity of antibodies was determined by evaluating lymphoid tissue from normal ferrets in situ, which was confirmed by western blot analyses. RESULTS: All 10 ferrets had clinically aggressive tumors, irrespective of the phenotype. Nine ferrets had T-cell lymphoma that extensively involved the mediastinum. Remnants of thymic tissue, indicative of thymic origin, were identified in lymphoma of these 9 ferrets. One ferret had a B-cell multicentric lymphoma without involvement of the mediastinum. CONCLUSIONS: The majority of lymphomas in these young ferrets involved the mediastinum and were of T-cell phenotype. Impact for Human Medicine-There are many similarities between the lymphoma syndrome of ferrets and the condition documented for cats and children with lymphoma of the mediastinal area. CLINICAL RELEVANCE: Differential diagnoses for young ferrets with clinical signs of lethargy or respiratory distress should include T-cell lymphoma of the mediastinum.
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