The vet will also take X-rays, especially if there’s a lump on a dog’s leg. Your vet will perform a general physical exam, as well as an orthopedic exam to rule out other potential causes of lameness. Canine osteosarcoma is extremely aggressive, and a swift diagnosis could help extend your pet’s life.
Cancer first develops deep within the bone, so your pup might not feel any initial pain or discomfort. The signs of a bone tumor in dogs can be subtle, making it challenging to detect early-stage osteosarcoma. Osteosarcoma can affect all dogs, so it’s best to monitor your pet’s health with annual veterinary visits and be mindful of potential symptoms of bone cancer. In most cases, multiple factors contribute to cancer in canines, some of which are hereditary while others are environmental. Some theories suggest the disease development might be related to prior fractures, underlying bone diseases, and repeated bone injuries. The causes of osteosarcoma in dogs are unclear. Note that there are several types of cancer in dogs, and breeds prone to bone cancer are not necessarily genetically predisposed to lymphoma, for example. There also appears to be a genetic risk factor present in large- and giant-sized dogs, with a higher prevalence of bone cancer in breeds such as: The disease appears to be more prevalent among young dogs between 18 and 24 months old, in addition to seniors aged seven to nine. Male dogs also tend to suffer from bone cancer more often than females, as do dogs who are neutered or spayed before they turn one.
Several genetic risk factors increase the likelihood of a dog developing osteosarcoma. (Note that “primary” indicates where the disease originated, rather than metastatic cancer in the legs, ribs, or hips seeping into the bone that started somewhere else.)īone cancer is a rare disease in humans, but studies reveal incidence rates are 27 times higher in dogs. Other types of bone cancer include fibrosarcoma, chondrosarcoma, and hemangiosarcoma. OSA is the most common subtype of primary bone tumor in dogs and humans, making up more than 95% of all cases of canine bone cancer. If cancer metastasizes (spreads throughout the body), it can lead to many secondary health issues, such as respiratory distress upon impairment of the lungs. The tumor, or sarcoma, can be rather painful, often causing dogs to walk with a limp to avoid placing pressure on the affected limb. However, the dog’s rear legs, facial bones, jaw, vertebrae, ribs, and hips may also be affected. In most cases, canine osteosarcoma develops as a large, hard lump on the dogs’ front legs.
Osteosarcoma (OS or OSA) is a malignant bone tumor comprised of naturally occurring cancer cells that can quickly and aggressively spread to other parts of the body. Compare pet insurance plans now to find the one that best suits your pup’s needs. Pet insurance can help you avoid this situation.
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Pro Tip: In some cases, pet parents might not be able to afford the costs of chemotherapy and surgery. How much does canine chemotherapy cost?.The good news is, although the prognosis can be rather discouraging, there are options that could extend your pet’s life.
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The symptoms can be subtle, which is why owners need to know how to recognize them and seek treatment as soon as possible. Osteosarcoma is a diagnosis that no pet parent wants to hear.
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