Peer-reviewed veterinary case report
Dog with severe low platelets and bleeding signs diagnosis
By McDonnell, Rachel & Cuq, Benoît·Published in The Canadian veterinary journal = La revue veterinaire canadienne·2025·University College Dublin·View original on PubMed →
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Original publication title: Amegakaryocytic thrombocytopenia in a dog: Diagnostic challenges and therapeutic considerations.
- Species:
- dog
Plain-English summary
A 7-year-old spayed female beagle was brought to the vet with vomiting, tiredness, and bleeding issues. Tests showed she had very low platelet counts and anemia. Initially diagnosed with primary immune thrombocytopenia, she was treated with medications including vincristine and prednisolone, but her condition didn't improve. After further testing confirmed a rare condition called amegakaryocytic thrombocytopenia, treatment was adjusted to include azathioprine, which did help her platelet count rise. Unfortunately, she later developed breathing problems, and her owner decided to euthanize her due to concerns about her quality of life.
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Abstract
A 7-year-old spayed female beagle was presented to its primary veterinary practice with vomiting, lethargy, and signs of hemorrhage. Investigations revealed severe thrombocytopenia and regenerative anemia. Following referral and further investigations, an initial diagnosis of primary immune thrombocytopenia was reached. Treatment with vincristine and prednisolone was initiated; however, the platelet count failed to increase, prompting the addition of cyclosporine. The platelet count temporarily improved but never normalized and subsequently declined again. A bone marrow biopsy confirmed a diagnosis of amegakaryocytic thrombocytopenia. Adjustments in treatment, including initiation of azathioprine, led to an increase in the platelet count. However, following an acute onset of respiratory distress, the owner perceived the dog's quality of life to be poor, leading to a decision for euthanasia. This case highlights the diagnostic challenges of distinguishing amegakaryocytic thrombocytopenia from primary immune thrombocytopenia and the complexities of managing this rarely reported condition in animals. Key clinical message: This report describes the clinical presentation, diagnostic investigation, and treatment of a case of amegakaryocytic thrombocytopenia. It highlights the diagnostic challenges presented to confirm this pathology in our patients. Early consideration of bone marrow examination is warranted in the diagnostic evaluation and management of refractory thrombocytopenia, given that the prognosis for and therapeutic implications of amegakaryocytic thrombocytopenia differ significantly from those related to other etiologies.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/41584236/