Multiple Osseous Metastases of a Carotid Body Tumor in a Dog

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概要

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• Metastasis of malignant carotid body tumor to multiple bones was detected in a 13-year-old female Siberian husky dog. Radiographs exhibited an abnormal mass in the retropharyngeal site and osteolytic lesions in the vertebral bodies, spinous process, tibia, and ribs. At necropsy, multiple masses were observed in the bones as well as at the dorsal area of the retropharynx. Histologically, the tumor cells, arranged in sheets and clusters, had eosinophilic finely granular cytoplasm. Immunohistochemistry showed the tumor cells were positive for neuron-specific enolase and synaptophysin. Electron microscopy demonstrated a number of dense membrane-bound granules in the cytoplasm of the tumor cells. Based on these findings, this case was diagnosed as multiple bone metastases of a malignant carotid body tumor. Spinal cord damage induced by the tumor mass was the cause of the hind limb paralysis of the present dog.

• 公益社団法人 日本獣医学会の論文

著者

• Shimada Akinori

  Department Of Comparative Pathology Faculty Of Veterinary Medicine Hokkaido University

• MORITA Takehito

  Department of Veterinary Pathology, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan

• YOSHIKAWA Masako

  Alice Veterinary Clinic

• OKAJIMA Mina

  Department of Veterinary Pathology, Tottori University

• NISHIDA Koji

  Medical Center Nishida Veterinary Clinic

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