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responses in dogs with CKD and the hormonal and inflammatory influence on erythroid precursors, this study aimed to compare bone marrow cytological features as well as hormones and interleukins involved in erythropoiesis between dogs in different stages of

Open access
in American Journal of Veterinary Research

hypothesized that cytologic examination of bone marrow would rarely be useful in identifying a definitive underlying cause of severe isolated thrombocytopenia in dogs and that abnormal bone marrow cytologic findings would be significantly less frequently

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in Journal of the American Veterinary Medical Association

marrow ( Figure 1 ) . Megakaryocytes, metarubricyte aggregates, and neutrophil and eosinophil granulocytes were occasionally seen. Bone marrow cytology revealed a predominant myeloid population with increased myeloblasts and progranulocytes ( Figure 2

Free access
in Journal of the American Veterinary Medical Association

Summary

Five cats were treated with an azathioprine suspension (2.2 mg/kg of body weight on alternate days) and 2 cats were given vehicle (controls) for 9 weeks. Complete blood and platelet counts and serum biochemistry variables were monitored weekly. Bone marrow aspirates were evaluated every 3 weeks, and core bone marrow biopsy was performed at the end of the study. Profound neutropenia (< 600 cells/μl) was observed in all treated cats, and 1 cat developed pancytopenia. Treatment was discontinued if the wbc count was < 3,000 cells/μl. Four weeks after discontinuation of azathioprine, 1 treated cat again was given azathioprine at a lower dosage (1.1 mg of azathioprine/kg on alternate days) and neutropenia recurred within 2 weeks. During treatment, 3 cats developed thrombocytosis, and 2 developed thrombocytopenia. In 4 of 5 cats, neutropenia and thrombocytopenia resolved when azathioprine was discontinued. Bone marrow cytologic examination during treatment revealed reduction of the neutrophil line, with relative increase in monocytes. Core bone marrow biopsy at the completion of the study revealed hypocellular marrow with marked decrease in the myeloid series in cats given azathioprine. One of the cats that was treated with azathioprine had a hypercellular marrow with increased numbers of mature granulocytes and precursors; however, azathioprine had been discontinued 3 weeks prior to biopsy. Alterations in serum biochemical variables were not associated with azathioprine. Two cats that were treated with azathioprine developed respiratory tract infections, and 1 of them was euthanatized during the study.

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in American Journal of Veterinary Research

% to 38%), which was considered nonregenerative in the 2 cases with an available reticulocyte count. The third case did not have a reticulocyte count reported, but the corresponding bone marrow cytology demonstrated severe marrow hypoplasia with the

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in Journal of the American Veterinary Medical Association

–4 Bone marrow cytologic findings in affected dogs reveal plasmacytosis. The typical radiographic appearance of bone lesions in dogs with multiple myeloma includes several areas of permeative or moth-eaten lysis, characterized by coalescing regions of

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in Journal of the American Veterinary Medical Association

findings, and medical records, cats were subcategorized into classifications of MDS or secondary dysmyelopoiesis by use of the modified FAB classification system. Criteria for Selection of Cases A search of all bone marrow cytology reports generated

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in Journal of the American Veterinary Medical Association

treatments or death or failure to improve 1 to 12 months after initial examination); and results of bone marrow cytologic evaluation or stained smears for dogs with nonregenerative anemia. Cases were excluded on the basis of the following criteria: no CBC

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in Journal of the American Veterinary Medical Association

CE , ed. Greene's infectious diseases of the dog and cat. 4th ed. St Louis : Elsevier Publishing , 2012 ; 92 – 108 . 13. Walton RM Modiano JF Thrall MA , et al. Bone marrow cytological findings in 4 dogs and a cat with hemophagocytic

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in Journal of the American Veterinary Medical Association

Vargmar K Kalk T , et al. Evaluation of preputial cytology in diagnosing oestrogen producing testicular tumours in dogs . J Small Anim Pract 2012 ; 53 : 536 – 541 . 10.1111/j.1748-5827.2012.01261.x 10. Raskin RE Messick JB . Bone marrow

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in Journal of the American Veterinary Medical Association