A Dog with Intratracheal Invasion of Thyroid Carcinoma: Long Survival Case by Receiving Palliative Radiation Therapy and Permanent Tracheostomy

  • TAZAWA Yuki
    Veterinary Teaching Hospital, Surgical Section, Graduate School of Veterinary Medicine, Hokkaido University Department of Veterinary Medicine, Rakuno Gakuen University
  • TAKAGI Satoshi
    Department of Veterinary Clinical Hospital, Laboratory of Veterinary Surgery, Graduate School of Veterinary Medicine, Hokkaido University
  • OHSAKI Tomohiro
    Department of Veterinary Clinical Hospital, Laboratory of Veterinary Surgery, Graduate School of Veterinary Medicine, Hokkaido University
  • KADOSAZA Tsuyoshi
    Department of Veterinary Clinical Hospital, Laboratory of Veterinary Surgery, Graduate School of Veterinary Medicine, Hokkaido University Department of Veterinary Medicine, Rakuno Gakuen University

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Other Title
  • 緩和的放射線治療と永久気管開口術によって長期間 生存した甲状腺癌の気管内浸潤を伴った犬の一例
  • カンワテキ ホウシャセン チリョウ ト エイキュウキカン カイコウジュツ ニ ヨッテ チョウキカン セイゾン シタ コウジョウセンガン ノ キカンナイ シンジュン オ トモナッタ イヌ ノ イチレイ

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Abstract

A 8-year-old spayed female, Shih Tzu showed dyspnea caused by intratracheal invasion of thyroid carcinoma and received palliative radiation therapy and a permanent tracheostomy. The protocol of palliative radiotherapy was 9 Gy weekly fractions of orthovoltage X-rays to a total dose of 27 Gy with cisplatin (5 mg/m2, iv) in each fraction. Dyspnea improved after the 2nd radiation therapy, but a relapse occurred at 5 months after the treatment. To keep upper airway, a permanent tracheostomy was performed. Following the operation, the dog could have good quality of life for 15 months (20 months after radiation therapy) till pulmonary metastases progressed.<br>

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