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Since every type of cell in the body potentially could evolve into cancerous tissue, the types and ferocity of tumors that develop in the dog are numerous and highly varied. Each case needs to be evaluated on its own circumstances and variables. For example, should surgery be done on a 16-year-old dog with what appears to be a 3-inch wide lipoma? Maybe not. Should that same dog have a quarter inch wide, black, nodular mass removed from its lower gum. Probably should! That small growth may be a melanoma that could metastasize to other areas of the dog’s body.
An important basic tool in eliminating a nuisance or dangerous lump is to surgically excise it.
Chemicals that are highly toxic to rapidly dividing cells make up an important mode of treatment for fast growing tumors. A combination of surgery and radiation/chemotherapy can help the veterinarian gain the upper hand in achieving a cure. Chemotherapy is often employed as an additional precautionary procedure after a mass has been "removed" via surgery.
For invasive tumors that do not have well defined borders and for tumors that tend to spread rapidly, radiation therapy can be a lifesaver. Available at most veterinary medical schools and some veterinary specialists in radiology, radiation therapy is appropriate for certain types of tumors. Radiation is often employed in addition to surgical excision.
Emerging science such as gene therapy and immunotherapy hold promise for some amazing ways to combat tumors. The future looks promising for these new methods of dealing with tumors.
According to Dr. Dubielzig, the best approach to understanding what to do about a lump or bump on your dog is to be vigilant and treat each situation individually. "In cases where vigilance for tumors is part of the animal’s care, such as in animals where a malignant tumor has been removed and the veterinarian wishes to keep abreast of the stage of disease, then every lump should be submitted for histopathology," Dubielzig said. "In other cases where the clinician is sure of a benign diagnosis such as lipoma or a wart-like skin mass then it might be understandable to use discretion. The clinician also has to take into consideration the risk of surgery compared to the risk of health problems from a particular lump or bump."
Take a good surface inventory of your dog today, then at least once a month from now on. If you find any imperfections, take heart in knowing that modern veterinary medicine has some very effective remedies for almost all of these lumps and bumps.