CD34+, CD41+ acute megakaryoblastic leukemia in a dog

Steven E. Suter, William Vernau, Michael M. Fry, Cheryl A. London

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A clinically normal, 5-year-old intact female German Shepherd dog was presented to the local veterinarian to be spayed. Results of a preoperative CBC included mild nonregenerative anemia, severe thrombocytopenia, and 17% unclassified cells. On cytologie examination of aspirates from the dog's enlarged spleen and peripheral lymph nodes, a population of primitive round cells that occasionally resembled megakaryocytes was observed. A bone marrow aspirate specimen was markedly hypercellular with approximately 65% of marrow cells comprising a homogeneous population of immature hematopoietic cells similar to those found in the spleen, lymph nodes, and peripheral blood. Using immunocytochemical stains with canine-specific antibodies, all neoplastic cells strongly expressed cytoplasmic CD41 and 20-70% of the neoplastic cells expressed CD34 weakly to moderately. Rare (<0.5%) neoplastic cells weakly expressed vWF. The cells were negative for all other markers. Based on these results and the morphology of the neoplastic cells, a diagnosis of acute megakaryoblastic leukemia (AMegL) was made. In spite of treatment, results of a CBC performed 1 week later indicated progressive anemia and thrombocytopenia, and the dog was euthanized. To our knowledge, this report documents the first case of canine AMegL diagnosed with both anti-canine CD34 and CD41 antibodies.

Original languageEnglish (US)
Pages (from-to)288-292
Number of pages5
JournalVeterinary Clinical Pathology
Volume36
Issue number3
DOIs
StatePublished - Sep 2007

Fingerprint

Leukemia, Megakaryoblastic, Acute
leukemia
Cells
Dogs
dogs
Antibodies
thrombocytopenia
anemia
lymph nodes
cells
Canidae
Bone
spleen
Blood
Coloring Agents
megakaryocytes
Thrombocytopenia
antibodies
Anemia
German Shepherd

Keywords

  • Acute megakaryoblastic leukemia
  • AML-M7
  • CD34
  • CD41
  • Dog

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • veterinary(all)

Cite this

CD34+, CD41+ acute megakaryoblastic leukemia in a dog. / Suter, Steven E.; Vernau, William; Fry, Michael M.; London, Cheryl A.

In: Veterinary Clinical Pathology, Vol. 36, No. 3, 09.2007, p. 288-292.

Research output: Contribution to journalArticle

Suter, Steven E. ; Vernau, William ; Fry, Michael M. ; London, Cheryl A. / CD34+, CD41+ acute megakaryoblastic leukemia in a dog. In: Veterinary Clinical Pathology. 2007 ; Vol. 36, No. 3. pp. 288-292.
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