Canine bone cancer commonly strikes large-breed dogs. About 85 percent of bone cancers in dogs are osteosarcomas, which are very aggressive tumors that easily spread to other parts of the body. Bone cancer primarily affects the limbs of large dogs; in smaller dogs, it commonly invades other parts of the skeleton.
Significance
Tumors typically grow on limbs; less frequently, they grow on the skull, ribs, vertebrae or pelvis. Bone is destroyed gradually over one to three months.
Identification
Symptoms of bone cancer in dogs include limping, weight loss or exercise avoidance. Dogs may seek isolation or behave restlessly. Increasing discomfort results in appetite loss, irritability and aggressiveness. A firm mass or swelling might appear at the tumor site.
Diagnosis
A radiograph (X-ray) usually detects tumor growth in the bones of dogs. For questionable cases, conclusive results can be obtained through a Magnetic Resonance Imaging scan (MRI), or through a bone biopsy.
Solution
A dog's overall health, the tumor type and its location determines treatment. Amputation and chemotherapy are often recommended for limb tumors, while radiation therapy and pain management protocols may be suggested for other locations, or when dogs are not surgery candidates. Prognoses range from four to 24 months.
Warning
Arthritis is often diagnosed upon early presentation of symptoms. Pain medication may result in temporary relief. If lameness persists, however, further diagnostic tests should be done. Lung metastasis is the most common cause of death in dogs with bone cancer.
Tags: bone cancer, other parts
