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Corel Medical Series: Cancer
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c42.dxr
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00084_Field_SRC.c42.A.6.txt
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1997-01-28
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Physical examination is the best way to identify early-stage thyroid cancer. Two groups of people need special screening procedures:
• Those with a family history of thyroid cancer or
multiple endocrine neoplasia (MEN II). Serum
thyroglobulin is useful in the former and serum
calcitonin and carcinoembryonic antigen (CEA)
are important tumor markers in the latter.
• Those who have had radiation therapy to the
neck and those who have no visible thyroid lumps
should be examined at least every two years. A
lump in the thyroid of these people generally
suggests that the thyroid gland should be
removed, since 40 percent will have cancer. To
avoid surgery, nodules less than about 1/2 in. (1
cm) are sometimes treated with thyroid hormone
for six months to see if they will regress.