Acute myelomonocytic leukemia (AML-M4) in a dog with the extradural lesion |
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Authors: | Hayashi Akiyoshi Tanaka Hiroshi Kitamura Masahiko Nishida Hidetaka Shimoda Tetsuya Ohashi Fumihito Nakayama Masanari |
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Institution: | Nakayama Veterinary Hospital, Nara. |
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Abstract: | A two-year-old dog having presented with neurological signs showed marked leukocytosis and appearance of blast cells in the peripheral blood. Hematological and bone marrow examination showed an increase in blasts having both myeloid and monocytic cells characteristics. The dog was diagnosed with acute myelomonocytic leukemia (AML-M4) on the basis of bone marrow findings. Although the dog was treated with a multi-combination chemotherapy, the neurological abnormalities progressed and the dog was euthanized. Myelographic examination and necropsy revealed the extradural lesion formed by AML-M4 around the cervical spinal cord and this lesion was considered as a cause of the neurological signs. |
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