A female newborn is found to have an elevated serum TSH and reduced T3 and T4 concentrations. Physical examination shows an anterior cervical mass high in the neck; the thyroid gland is not palpable. What’s the most likely cause of these findings in this patient?
Antibody against TSH receptor
Antibody against thyroperoxidase
Anti-microsomal antibody
Iodine channel gene mutation
Lingual thyroid
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Cut-to-the-chase Answer (0:59):
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HY USMLE Answer (4:11):
