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Chordoma of the thoracic vertebrae in a Bengal tiger (Panthera tigris tigris).


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.

SUBMITTER: Kuramochi M 

PROVIDER: S-EPMC4527518 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature

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Chordoma of the thoracic vertebrae in a Bengal tiger (Panthera tigris tigris).

Kuramochi Mizuki M   Izawa Takeshi T   Hori Mayuka M   Kusuda Kayo K   Shimizu Junichiro J   Iseri Toshie T   Akiyoshi Hideo H   Ohashi Fumihito F   Kuwamura Mitsuru M   Yamate Jyoji J  

The Journal of veterinary medical science 20150313 7


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  ...[more]

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