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Thyroid Cancer
The thyroid, located in the lower front portion of the neck, is a gland that
produces thyroid hormone. Thyroid hormone helps to regulate the body temperature,
control the overall rate of metabolism and energy expenditure, and maintain
normal functioning of the cardiovascular system and the central nervous system.
Thyroid cancer occurs when the thyroid cells begin reproducing at an uncontrollable
rate, bunching together to form a tumour. If these cells stay within the tumour,
the tumour is considered to be benign, or harmless. If, however, the cells begin
to spread to other tissue, the tumour is considered malignant, or cancerous.
In patients who have thyroid cancer, CT neck scan images can reveal whether
or not the cancer is spreading beyond the thyroid to other regions in the neck.
These images can also help the doctor determine if the thyroid cancer has caused
the lymph nodes in the neck or chest to enlarge.
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