E-ISSN 2218-6050 | ISSN 2226-4485
 

Case Report


Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis

Yuki Nemoto, Munekazu Nakaichi, Masashi Sakurai, Kazuhito Itamoto, Masahiro Morimoto, Hiro Horikirizono, Harumichi Ito, Hiroshi Sunahara, Kenji Tani.


Abstract
Background:
Histiocytic sarcoma (HS) is an aggressive malignant neoplasm, and widespread metastasis occurs with a fatal outcome. HS involving the central nervous system is relatively uncommon. Spinal cord necrosis, a very rare condition, could be induced by ischemia or infarction. Here, we report a dog progressing non-ambulatory tetraparesis with spinal cord necrosis caused by HS.
Case Description:
A 9-year-old male Labrador retriever was presented with a progressing non-ambulatory tetraparesis. CT imaging revealed lysis of the spinous process of T7 and a ring-shaped lesion surrounding the soft tissue of lung fields. T2-weighted MRI showed the spinous processes of T6 to T8 as hyperintense, and the lesion infiltrated into the T7 vertebra and the spinal cord. After euthanasia, the final diagnosis upon necropsy was HS, which was observed in the lung, spinous process, thoracic cord, and the pulmonary hilar lymph node. Moreover, necrotic spots were spread widely through the thoracic spinal cord.
Conclusion:
This report outlines a case of canine HS in the lung, spinous process, thoracic cord, and pulmonary hilar lymph node. Ischemic deficit and necrosis of the thoracic spinal cord resulted from the compression of perivascular tumor cells, which rapidly led to progressive tetraparesis. Although the diagnosis was difficult, MRI and CT images helped determine the prognosis. To our knowledge, this is the first case report of canine HS with direct spinal cord involvement associated with spinal necrosis.

Key words: Dog, histiocytic sarcoma, spinal cord necrosis


 
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How to Cite this Article
Pubmed Style

YN, MN, Sakurai M, Itamoto K, Morimoto M, Horikirizono H, Ito H, Sunahara H, Tani K. Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis. Open Vet J. 2023; 13(3): 394-399. doi:10.5455/OVJ.2023.v13.i3.18


Web Style

YN, MN, Sakurai M, Itamoto K, Morimoto M, Horikirizono H, Ito H, Sunahara H, Tani K. Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis. https://www.openveterinaryjournal.com/?mno=13863 [Access: February 28, 2024]. doi:10.5455/OVJ.2023.v13.i3.18


AMA (American Medical Association) Style

YN, MN, Sakurai M, Itamoto K, Morimoto M, Horikirizono H, Ito H, Sunahara H, Tani K. Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis. Open Vet J. 2023; 13(3): 394-399. doi:10.5455/OVJ.2023.v13.i3.18



Vancouver/ICMJE Style

YN, MN, Sakurai M, Itamoto K, Morimoto M, Horikirizono H, Ito H, Sunahara H, Tani K. Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis. Open Vet J. (2023), [cited February 28, 2024]; 13(3): 394-399. doi:10.5455/OVJ.2023.v13.i3.18



Harvard Style

, Y. N., , . M. N., Sakurai, . M., Itamoto, . K., Morimoto, . M., Horikirizono, . H., Ito, . H., Sunahara, . H. & Tani, . K. (2023) Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis. Open Vet J, 13 (3), 394-399. doi:10.5455/OVJ.2023.v13.i3.18



Turabian Style

, Yuki Nemoto, Munekazu Nakaichi, Masashi Sakurai, Kazuhito Itamoto, Masahiro Morimoto, Hiro Horikirizono, Harumichi Ito, Hiroshi Sunahara, and Kenji Tani. 2023. Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis. Open Veterinary Journal, 13 (3), 394-399. doi:10.5455/OVJ.2023.v13.i3.18



Chicago Style

, Yuki Nemoto, Munekazu Nakaichi, Masashi Sakurai, Kazuhito Itamoto, Masahiro Morimoto, Hiro Horikirizono, Harumichi Ito, Hiroshi Sunahara, and Kenji Tani. "Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis." Open Veterinary Journal 13 (2023), 394-399. doi:10.5455/OVJ.2023.v13.i3.18



MLA (The Modern Language Association) Style

, Yuki Nemoto, Munekazu Nakaichi, Masashi Sakurai, Kazuhito Itamoto, Masahiro Morimoto, Hiro Horikirizono, Harumichi Ito, Hiroshi Sunahara, and Kenji Tani. "Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis." Open Veterinary Journal 13.3 (2023), 394-399. Print. doi:10.5455/OVJ.2023.v13.i3.18



APA (American Psychological Association) Style

, Y. N., , . M. N., Sakurai, . M., Itamoto, . K., Morimoto, . M., Horikirizono, . H., Ito, . H., Sunahara, . H. & Tani, . K. (2023) Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis. Open Veterinary Journal, 13 (3), 394-399. doi:10.5455/OVJ.2023.v13.i3.18