Heather M. Wilson, DVM, DACVIM-Onc

Cells from normal tissues live harmoniously, maintaining an appropriate distance from each other without piling up. They divide only at the rate necessary for replacement of tissue which has died from aging or injury.

Soft tissue sarcomas of the cat come in several forms. Injection site sarcomas/Vaccine associated sarcomas are the most common sarcomas seen in feline patients today.

Mast cell tumors (MCT) are the most common skin tumors in the dog. They represent 16-21% of all skin tumors. There are two forms in the dog, the dermal form and visceral form in the dog.

Lymphoma is considered to be the most common cancer in the cat. Lymphoma can affect cats of any age group and any breed. There seems to be biphasic occurrence with a peak in young cats and then another peak in middle aged to slightly older cats.

Bladder tumors represent < 2% of all canine malignancies. Transitional cell carcinoma is the most common histologic type diagnosed in both cats and dogs.

Osteosarcoma (OSA) is the most common primary bone tumor in dogs accounting for up to 85% of bone tumors in the dog.