There are two thyroid glands in the throat of the dog that are responsible for the production and storage of thyroid hormones. These hormones control many of the functions in the dog's body, including metabolism.
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About Tumors
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Thyroid tumors can be benign (non-cancerous) or malignant (cancerous). Benign tumors often grow to enormous sizes and may cause the thyroid to produce excess hormones. Malignant tumors can spread to other portions of the body.
Symptoms
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Dogs affected with a thyroid tumor may or may not show symptoms. Dogs who are showing symptoms may show signs of difficulty swallowing, hyperthyroidism, excessive drinking or urination, coughing or difficulty breathing.
Diagnosis
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Diagnosing a thyroid tumor includes a physical exam, X-rays, an ultrasound or a CAT scan to fully determine the characteristics of the tumor. Biopsies can be done to determine if the tumor is benign or malignant.
Treatment
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Some tumors are too involved with local tissues and blood vessels, so removal is not always the best option. Other treatment options include chemotherapy or radiation.
Prognosis
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Survival rates can vary from dog to dog. Some dogs may live three years or more following treatment for a thyroid tumor.
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