Which tumor type accounts for the majority of canine primary bone tumors?

Which tumor type accounts for the majority of canine primary bone tumors?

• A. Osteosarcoma
• B. Chondrosarcoma
• C. Fibrosarcoma
• D. Ewing Sarcoma

Answer: (A)

Dog primary bone tumors are most commonly osteosarcoma. This tumor predominates in large and giant breeds and tends to affect the long bones near the growth plates, where it often causes aggressive bone destruction and a painful presentation. Osteosarcoma is characterized by malignant osteoblasts producing osteoid; its behavior is notably aggressive with a high tendency to metastasize to the lungs early in the course. Other bone tumors like chondrosarcoma, fibrosarcoma, and Ewing sarcoma do occur in dogs but are much less common, so osteosarcoma accounts for the majority of canine primary bone tumors.

Dog primary bone tumors are most commonly osteosarcoma. This tumor predominates in large and giant breeds and tends to affect the long bones near the growth plates, where it often causes aggressive bone destruction and a painful presentation. Osteosarcoma is characterized by malignant osteoblasts producing osteoid; its behavior is notably aggressive with a high tendency to metastasize to the lungs early in the course. Other bone tumors like chondrosarcoma, fibrosarcoma, and Ewing sarcoma do occur in dogs but are much less common, so osteosarcoma accounts for the majority of canine primary bone tumors.