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| 基本情報 |
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| 氏名 |
水谷 真也 |
| 氏名（カナ） |
ﾐｽﾞﾀﾆ ｼﾝﾔ |
| 氏名（英語） |
Mizutani Shinya |
| 所属 |
獣医学部 獣医学科 |
| 職名 |
講師 |
| researchmap研究者コード |
7000027155 |
| researchmap機関 |
岡山理科大学 |
Computed Tomography Based Thymoma-to-Cranial Intrathoracic Volume Ratio Predicts Feasibility of Video-Assisted Thoracoscopic Surgery (VATS) Thymectomy in a Small Dog: A Case Report
Shinya MIZUTANI 1)*, Saki KAGEYAMA 2), Yoshimichi GODA 3), Yasuhiko OKAMURA 1), Ikki Mitsui 4), Natsuki AKASHI 1), Akihiro OHNISHI 1), Teppei KANDA 1, 2), Taketoshi ASANUMA 1)
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AbstractBackground: Canine thymoma (CT) is the most common neoplastic disease of the cranial intrathoracic cavity. Reports of video-assisted thoracoscopic surgery-thymectomy (VATS-T) in dogs are increasing, but the surgical indication criteria remain unclear. This report highlights the value of a new criterion called the thymoma volume to cranial intrathoracic volume ratio (T/CI ratio) for evaluating the feasibility of VATS-T.
Case description: A neutered 9-year-old Papillon weighing 3.5 kg had a mass of approximately 20 mm in the cranial intrathoracic cavity. The dog was in good general condition and had no clinical symptoms. Computed tomography revealed a solitary mass with clear boundaries and weak contrast enhancement. The T/CI ratio obtained from CT examination was 2.4%. The dog underwent thoracoscopic tumor resection. Pathological examination revealed that the tumor was a thymoma. The dog was discharged without any postoperative complications. The T/CI ratios obtained from CT data of dogs of the same breed and weight, which ranged from 1.1% to 4.1%, were calculated based on previous reports that measured the volume of thymomas.
Conclusion: The T/CI ratio may serve as a new objective criterion for evaluating the relationship between cranial intrathoracic volume and thymoma volume for VATS-T, regardless of dog body size. Although this case demonstrates a promising correlation between the CT-based T/CI ratio and the feasibility of VATS-T, the findings are limited to a single case. Further studies involving a larger number of patients are necessary to validate this observation.
Keywords: Computed tomography; Dog; Thoracoscopy; Thymoma; Video-assisted thoracoscopic surgery.
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