Canine Extraskeletal Osteosarcoma of Rear Limb Originating from Soft Tissue with Metastases in Lung, Abdominal Cavity and Abdominal Wall

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  • MATSUMURA Masako
    Veterinary Clinical Oncology, Faculty of Applied Biological Sciences, Gifu University
  • SAKAIDA Makoto
    Veterinary Clinical Oncology, Faculty of Applied Biological Sciences, Gifu University
  • YAMADA Masato
    Veterinary Clinical Oncology, Faculty of Applied Biological Sciences, Gifu University
  • AKIYAMA Hiroshi
    Veterinary Pathology, Faculty of Applied Biological Sciences, Gifu University
  • SAKAI Hiroki
    Veterinary Pathology, Faculty of Applied Biological Sciences, Gifu University
  • WATANABE Kazuhiro
    Veterinary Surgery, Faculty of Applied Biological Sciences, Gifu University
  • MORI Takashi
    Veterinary Clinical Oncology, Faculty of Applied Biological Sciences, Gifu University
  • MARUO Kohji
    Veterinary Clinical Oncology, Faculty of Applied Biological Sciences, Gifu University

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Other Title
  • 肺や腹腔内および腹壁への転移を認めた犬の後肢軟部組織由来の骨外性骨肉腫の一例
  • ハイ ヤ フククウ ナイ オヨビ フクヘキ エ ノ テンイ オ ミトメタ イヌ ノ コウシナンブ ソシキ ユライ ノ コツ ガイセイ コツニクシュ ノ イチレイ

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Abstract

A female, 8-year-old Labrador Retriever with elevation of the right rear limb was referred to our hospital. We found the mass behind the right knee. Although it was diagnosed as osteosarcoma by Tru-cut core biopsy, morphological abnormality of bone and periosteum commonly seen in the case of skeletal osteosarcoma was not evidenced by X-ray and CT examinations. The amputation of the right pelvic limb by disarticulation of the hip was performed. However, on 147 days after surgery the canine patient died from metastases in lung, abdominal cavity and abdominal wall. The case was definitely diagnosed as extraskeletal osteosarcoma behind right knee originating from soft tissue by X-ray and CT images, postoperative course, biological behavior, macroscopic finding and histopathological examination of the tumor.<br>

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