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Old 10-22-2011
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Default male newborn with abnormal TSH

A male newborn has an abnormal blood TSH concentration at birth. P/E shows an anterior cervical mass high in the neck;the thyroid gland is not palpable. Serum studies show TSH concentration of 30Ul/mL (N=<5), T4 less than 3 (N=4-12), and T3 concentration is 65ng/dL (N=80-100). Which of the following is the most likely cause of these findings?

A. Anti-TSH receptor antibody
B. Lingual thyroid
C. Negative Iodine balance
D. sodium/iodine symporter gene mutation
E. thyroid carcinoma
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Old 10-22-2011
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lingual thyroid?
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