Chordoma of the thoracic vertebrae in a Bengal tiger (Panthera tigris
tigris) |
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| Authors: | Mizuki KURAMOCHI Takeshi IZAWA Mayuka HORI Kayo KUSUDA Junichiro SHIMIZU Toshie ISERI Hideo AKIYOSHI Fumihito OHASHI Mitsuru KUWAMURA Jyoji YAMATE |
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| Institution: | 1)Veterinary Pathology, Osaka Prefecture University, 1–58 Rinku-Ourai-Kita, Izumisano City, Osaka 598–8531, Japan;2)Misaki Koen, 3990 Tannowa, Misaki-Cho, Osaka 599–0301, Japan;3)Veterinary Medical Center, Osaka Prefecture University, 1–58 Rinku-Ourai-Kita, Izumisano City, Osaka 598–8531, Japan |
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| Abstract: | A 19-year-old female Bengal tiger (Panthera tigris tigris) was presented
with hind limb weakness, ataxia and respiratory distress. Computed tomography revealed a
mass between the left side of the T7 vertebra and the base of the left 7th rib. The tiger
then died, and necropsy was performed. Grossly, the vertebral mass was 6 × 5.7 × 3 cm, and
invaded the adjacent vertebral bone and compressed the T7 spinal cord. Histologically, the
mass was composed of large, clear, vacuolated and polygonal cells with osteochondral
matrix. Cellular and nuclear atypia were moderate. The vacuolated cells stained positively
for cytokeratin and vimentin and negatively for S-100. Based on these findings, the
present case was diagnosed as a vertebral chordoma; the first report in a tiger. |
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| Keywords: | chordoma neurological symptom tiger vertebral tumor |
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