Cancer in the Shar-Pei
Because of the weaker immune system of some Shar-Pei, they can be considered at risk for all types of cancer. The skin is the most common site for tumors in the Shar-Pei, though not all skin tumors are malignant. Most dermal or skin melanomas in the dog are benign. If found in the mouth of a dog, however, a melanoma is highly malignant and can spread to the lymph system or lungs if not caught early. Mast cell is a common skin tumor in Shar-Pei, and though it may or may not be malignant, it should be surgically removed. Breast cancer is very common, especially in the older, unspayed bitch. Fifty percent of breast tumors in dogs become malignant and may spread to other parts of the body, especially the lungs. Testicular cancer (cancer of the prostate) occurs most commonly in intact male dogs. Neutering greatly reduces the incidence of these malignancies.
Eighteen years ago, the veterinary study of oncology did not even exist. Today, clinics are able to hire specialists in the field and obtain the vital equipment needed to treat various types of cancer in dogs. Treatments such as radiation, chemotherapy or immunotherapy (agents that stimulate the patient’s own immune system to fight the cancer) can be expensive but are available. Some pet insurance programs will cover a portion of the costs. To locate a treatment center, ask your veterinarian, check with your nearest school of veterinary medicine or contact the local chapter of the Veterinary Medical Association.
Myositis is a disease that attacks a group of muscles. Masticatory myositis can progress or recurrent episodes can result in atrophy and fibrosis of the muscles that close the jaw; the end result is the inability to open the mouth. This is most likely an immune-mediated condition.
Symptoms include swelling of the temporalis muscles (in the temples between the ear and eye) and masseter muscles (muscles of the jaw), causing the dog to have “bugged” eyes; fever; enlarged lymph nodes; depression; and an inability to open the mouth, sometimes less than one-fourth of an inch, making it impossible to eat. Your vet may treat the condition with steroids.