Golden Retriever Heart Tumor. While it mostly affects limbs a tumor can occur in the spine ribs or skull. That being said even if your Golden Retriever has a cancer-causing gene it does not mean heshe will develop cancer for sure.

This tumor typically affects middle-aged to older dogs with the average age at diagnosis being 9 to 12 years. Why Do Golden Retrievers Develop Cancer. It is the most common tumor of the heart and occurs in the right atrium or right auricular appendage.
Hemangiosarcoma a soft tissue tumor that arises out of blood vessels Lymphosarcoma cancer arising from the lymphocytes in the lymphatic system Malignant melanoma a form of skin tumor that arises from melanocytes the cells in the skin that produce dark pigment.
He also saw several lesions on the inside of the heart sac that were probably old tumors that had bled. The causes for cancer in Golden Retrievers arent specifically known. Hemangiosarcoma of the spleen or liver is the most common tumor to cause hemorrhage in the abdomen. Purdue University conducted the National Breed Health Survey and found that 61 of Golden Retrievers die from cancer namely hemangiosarcoma lymphoma mast cell tumors and osteosarcoma.