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Appendicular Osteosarcoma

Jul 26, 2018

Appendicular osteosarcoma (bone cancer of the leg) is most common in giant and large breed dogs, with an average age of onset of 7 years. The most common site for the development of osteosarcoma (OSA) is the distal radius (near the wrist), followed by the proximal humerus (near the shoulder) and less commonly proximal and distal femur and tibia (hips to ankles). While acute lameness due to pathologic fracture (disease-related bone break) occurs in some dogs, most present with a history of progressive lameness over several weeks.