Journal
JOURNAL OF VETERINARY MEDICAL SCIENCE
Volume 81, Issue 8, Pages 1229-1233Publisher
JAPAN SOC VET SCI
DOI: 10.1292/jvms.19-0006
Keywords
anemia; diabetes; koala; myelogenic leukemia; retrovirus
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A female koala presented with hyperglycemia related to diabetes mellitus diagnosed at 9 years and treated with insulin. She presented with nasal hemorrhage, anemia, leukocytosis, and tachypnea at 10 years. A blood smear examination revealed scattered, atypical large myeloid cells and a clinical diagnosis of myelogenous leukemia was made. White blood cell count reached a maximum of 295 x 10(2)/mu l, with evidence of severe regenerative anemia and thrombocytopenia. Grossly, systemic lymph node enlargement, fragile liver with hemorrhage, and bloody ascites were observed. Histopathologically, atypical myeloid cells, including myelocytic and metamyelocytic cells, were scattered in the vasculature and surrounding tissues throughout the organs. The patient was infected with a koala retrovirus, which might have caused the myelogenous leukemia.
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