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Wakabayashi Hidetaka
Department School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine Position Professor and Division head |
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| Article types | Original article |
| Language | English |
| Peer review | Peer reviewed |
| Title | Outcome of appendicular or scapular osteosarcoma treated by limb amputation in cats: 67 cases (1997-2018). |
| Journal | Formal name：Journal of the American Veterinary Medical Association Abbreviation：J Am Vet Med Assoc ISSN code：1943569X/00031488 |
| Domestic / Foregin | Foregin |
| Volume, Issue, Page | 260(S1),pp.S24-S28 |
| Author and coauthor | Nakano Yuko, Kagawa Yumiko, Shimoyama Yumiko, Yamagami Tetsushi, Nomura Kohji, Wakabayashi Hidetaka, Sugiyama Yoshifumi, Kobayashi Tetsuya |
| Publication date | 2021/12 |
| Summary | OBJECTIVE:To evaluate the metastasis rate, survival time, and prognostic factors associated with appendicular or scapular osteosarcoma treated by limb amputation in cats.ANIMALS:67 cats with histologically confirmed appendicular or scapular osteosarcoma treated by limb amputation.PROCEDURES:This retrospective cohort study included cats with histologically confirmed appendicular or scapular osteosarcoma between January 1997 and December 2018. A questionnaire survey was conducted at veterinary clinics where limb amputation was performed. Distant metastasis, local recurrence, and lymph node metastasis rates and survival time were determined. Factors associated with distant metastasis and survival were investigated.RESULTS:The distant metastasis rate after limb amputation was 41.9% (26/62). The overall distant metastasis rate was 46.3% (31/67), including 5 cats with distant metastasis at the time of amputation. Osteosarcoma of the humerus resulted in distant metastasis in 6 of 7 cases. Osteosarcoma of the humerus was significantly associated with distant metastasis in univariate and multivariate analyses (adjusted OR, 9.56). The rate of lymph node metastasis after limb amputation was 3.0% (2/66), and the local recurrence rate was 9.0% (6/67). The median survival time was 527 days. Age and tumor location were not significantly associated with survival time.CLINICAL RELEVANCE:Distant metastasis occurs in approximately 40% of cats with appendicular or scapular osteosarcoma after limb amputation. In addition, osteosarcoma of the humerus has a particularly high incidence of distant metastasis. Detailed follow-up is therefore necessary, even after limb amputation, especially in cases of osteosarcoma of the humerus. |
| DOI | 10.2460/javma.21.04.0213 |
| PMID | 34914624 |