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Canine mandibular osteosarcoma: 51 cases (1980-1992)

R C Straw1, B E Powers, J Klausner

  • 1Department of Clinical Science, College of Veterinary Medicine, Colorado State University, Fort Collins 80523, USA.

Journal of the American Animal Hospital Association
|May 1, 1996
PubMed
Summary
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Surgery alone for canine mandibular osteosarcomas (OSs) showed a higher one-year survival rate (71%) compared to appendicular OSs. Histological factors, not treatment type, predicted outcomes in this retrospective study.

Area of Science:

  • Veterinary Oncology
  • Comparative Oncology
  • Surgical Oncology

Background:

  • Mandibular osteosarcomas (OSs) are aggressive bone cancers in dogs.
  • Treatment options for canine OSs include surgery, chemotherapy, and radiation therapy.
  • Prognostic factors for mandibular OSs require further investigation.

Purpose of the Study:

  • To retrospectively evaluate treatment outcomes for dogs with mandibular osteosarcomas (OSs).
  • To compare survival rates based on treatment modalities and patient factors.
  • To identify prognostic indicators for mandibular OS survival.

Main Methods:

  • Retrospective analysis of 51 dogs diagnosed with mandibular osteosarcomas.
  • Categorization of treatments: partial mandibulectomy, chemotherapy, radiation therapy, and combinations.

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  • Statistical analysis to determine survival rates and prognostic factors.

    • Main Results:

    • Overall one-year survival rate was 59.3%.
    • Dogs treated with surgery alone had a 71% one-year survival rate, significantly better than appendicular OSs.
    • Histological score and grade were predictive of survival; treatment modality and institution were not.

    Conclusions:

    • Partial mandibulectomy alone offers a favorable survival rate for canine mandibular osteosarcomas.
    • Histological features are key prognostic indicators for mandibular OS.
    • Further research into multimodal treatments may be warranted to improve outcomes.