Osteosarcoma in Dogs
Osteosarcoma is a high-severity cancer condition that can affect dogs of all ages and breeds. Osteosarcoma is the most common primary bone tumour in dogs, occurring predominantly in the long bones of large and giant breeds. It is locally aggressive and metastasises early, primarily to the lungs. Prognosis remains guarded despite treatment. It is documented across 6 breeds, though prevalence and severity can differ significantly between them. It typically becomes apparent at 7-10 years. Early signs to watch for include progressive limb lameness, swelling over bone, bone pain, and pathological fracture. When treatment is required, costs are estimated at £6,000-£15,000 depending on severity, location, and the specific intervention needed. This page covers symptoms, treatment options, and preventive steps — along with breed-specific information where available.
Signs & Symptoms
The following symptoms are commonly associated with Osteosarcoma in dogs. If your dog displays several of these signs, consult your vet promptly — early diagnosis typically leads to better outcomes.
- Progressive limb lameness
- Swelling over bone
- Bone pain
- Pathological fracture
- Reduced exercise tolerance
Treatment Overview
Limb amputation combined with chemotherapy (carboplatin or doxorubicin) gives median survival of 10-12 months. Limb-sparing surgery is possible in some cases. Palliative radiation and pain management are alternatives.
Typical onset: 7-10 years
Prevention & Screening
While not all cases of Osteosarcoma can be prevented, the following steps reduce risk or enable earlier intervention:
- No proven prevention
- Early investigation of unexplained lameness in large breeds over 5 years
Estimated Treatment Cost
Treatment for Osteosarcoma is estimated at £6,000-£15,000, depending on severity, the specific intervention required, and your location. Costs may be higher for surgical procedures or ongoing management. Comprehensive pet insurance covering this condition is strongly recommended.
Breeds Affected by Osteosarcoma
The following 8 breeds are documented as being susceptible to Osteosarcoma. Click any breed to view breed-specific information about this condition, including prevalence and recommended screening.
Looking for more information? Browse all dog health conditions or explore the health guides for in-depth breed care advice.