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Case Reports
. 2018;8(2):118-124.
doi: 10.4314/ovj.v8i2.1. Epub 2018 Apr 1.

Indolent, T-cell, large granular lymphocytic leukaemia in a dog presenting with severe neutropenia and an absence of lymphocytosis

James Elliott  1 , Elizabeth Villiers  2
Affiliations
Case Reports

Indolent, T-cell, large granular lymphocytic leukaemia in a dog presenting with severe neutropenia and an absence of lymphocytosis

James Elliott et al. Open Vet J. 2018.

Abstract

In humans, large granular lymphocytic leukaemia (LGLL) is a low-grade, indolent lymphoproliferative disorder of large granular lymphocytes (LGL) associated with autoimmune disorders; including rheumatoid arthritis and single or multiple cytopenias; particularly neutropenia. Therapy largely centres around immunosuppression which aims to resolve the immune-mediated secondary pathology, often without eradicating the neoplastic clone. The most effective agents appear to be cyclophosphamide, cyclosporine and methotrexate. This case report describes the presentation, diagnostics, therapeutic approach and outcome of a 6 year-old Golden Retriever presenting with severe neutropenia. Chlorambucil, prednisolone and cyclosporine failed to improve the neutropenia but subsequent cyclophosphamide resulted in a sustained albeit temporary improvement in neutrophil count and the ability to withdraw prophylactic antibacterials. This case closely mirrors the diagnostics and therapeutic response in human LGLL.

Keywords: Canine; Granular lymphocytic leukaemia; T-cell.

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Figures

Fig. 1
Fig. 1
Cytology of splenic fine needle aspiration at initial diagnosis showing occasional LGL.
Fig. 2
Fig. 2
Cytology of bone marrow aspiration at initial diagnosis, showing LGL in a significant proportion of lymphocytes.
See this image and copyright information in PMC

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