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Published on: November 26, 2018
Chronic eosinophilic leukemia in a cat: cytochemical and immunophenotypical features
Maria Elena Gelain1, Elisa Antoniazzi, Walter Bertazzolo
1Department of Veterinary Pathology, Hygiene and Health, University of Milan, Milan, Italy. mariaelena.gelain@unimi.it
Veterinary Clinical Pathology
|November 24, 2006
Summary
This study reports the first case of chronic eosinophilic leukemia in a cat with feline leukemia virus (FeLV) infection. Diagnostic methods included flow cytometry to characterize neoplastic cells.
Area of Science:
- Veterinary Hematology
- Feline Oncology
- Comparative Pathology
Background:
- Feline leukemia virus (FeLV) is an immunosuppressive retrovirus impacting cats.
- Chronic eosinophilic leukemia (CEL) is a rare myeloproliferative neoplasm characterized by excessive eosinophil production.
Observation:
- A 3-year-old cat presented with anorexia, depression, anemia, thrombocytopenia, and marked eosinophilia.
- Diagnostic workup revealed FeLV infection and neoplastic eosinophils in blood and bone marrow.
- Flow cytometry identified neoplastic cells positive for CD11b and CD14.
Findings:
- The case presented is consistent with chronic eosinophilic leukemia in a cat.
- This is the first reported instance of feline CEL associated with naturally acquired FeLV infection.
- Flow cytometry provided crucial characterization of the neoplastic eosinophils.
Implications:
- This case expands the understanding of FeLV-associated malignancies in cats.
- Highlights the importance of advanced diagnostics like flow cytometry in feline hematologic disorders.
- Suggests a potential link between FeLV and the development of eosinophilic leukemia.
