Pancytopenia in a dog

History: This patient first presented to the Bailey Small Animal Teaching Hospital at Auburn University (AU-SATH) Emergency and Critical Care (ECC) service on 6/22/15 for evaluation of a twomonth history of lethargy, weight-loss, and decreased appetite. Notable laboratory findings at that visit included mild, poorly-regenerative anemia (HCT-31.8%; absolute reticulocytes 94,000/μL), increased RDW (17.9%), and moderate to marked thrombocytopenia (38,000/μL; only rare platelet clumps noted on smear). Serum biochemistry abnormalities included hyperproteinemia (13.59 g/dL), hypoalbuminemia (1.3 g/dL), hyperglobulinemia (11.5 g/dL), and hypercalcemia (15.9 mg/dL). Radiographs revealed small radiolucent opacities of the dorsal spinous processes of T10 and L2 vertebrae. A bone marrow aspirate was obtained and a representative photomicrograph can be seen in Figure 1. The patient was discharged with the standard of care oral medications for the condition diagnosed.