Feline Osteosarcoma Study Guide
Overview and Clinical Importance
Osteosarcoma (OSA) is the most common primary bone tumor in cats, accounting for approximately 70-80% of all primary malignant bone tumors in this species. Although primary bone tumors are rare in cats (incidence of approximately 4.9 per 10,000 cases), understanding feline OSA is essential for NAVLE success because it differs significantly from canine OSA in behavior, prognosis, and treatment approach.
The key distinguishing feature of feline OSA is its lower metastatic potential compared to canine OSA. While 90% of canine osteosarcomas metastasize, feline OSA has a metastatic rate of only 5-45% depending on the study and anatomic location.
Epidemiology and Risk Factors
Signalment
Age: Middle-aged to older cats are most commonly affected, with a mean age of 8-10 years (range: 1-20 years).
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