Surgical Treatment of Choroid Plexus Papilloma in a Dog

DOI 7 References
  • NAKAICHI Munekazu
    Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University
  • SAITOH Takehiko
    Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University
  • KUWAI Yuka
    Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University
  • HASEGAWA Mayumi
    Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University
  • ITAMOTO Kazuhito
    Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University
  • NODA Fumiko
    Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University
  • UNE Satoshi
    Department of Veterinary Hospital, Faculty of Agriculture, Yamaguchi University
  • SAKAMOTO Tetsuro
    Sakamoto Animal Hospital
  • TAURA Yasuho
    Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University

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Other Title
  • 犬の脈絡叢乳頭腫に対して外科的治療を行った1症例

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We treated a six-year-old male Shetland sheep dog with head tilting and difficulty in standing. MRI examination revealed an intracranial mass at the right cerebellopontine angle. Surgical removal of the mass was attempted six days after the first diagnosis. The right transverse sinus was exposed by suboccipital craniectomy, and plugged with bone wax. The plugged sinus and the surrounding bone tissues were removed, and the cerebellum was widely exposed. After incision of the dura on the cerebellum, the mass could be partially observed because it was sticking out of the parenchyma of the cerebellum. The mass was removed as much as possible with gentle dissection of the parenchyma, but on post-operative MRI images part of the mass was found still remaining inside the skull. Histopathologically, the mass was diagnosed as a choroid plexus papilloma. Recovery from the surgery was remarkable, and the dog was able to walk unaided within a week. The dog was in a satisfactory condition for 22 post-operative months although its head tilting persisted. It died because of recurrence of the disease 25 months after the first diagnosis.

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