congenital hypothyroidism

Question Number 1506

the following are true of congenital hypothyroidism

a) it is usually caused by a defect in the biosynthesis of thyroid hormone
b) Most infants with congenital hypothyroidism are asymptomatic at birth
c) the posterior fontanelle is usually widely open
d) the distal femoral epiphysis is often absent at birth
e) the absence of ectopic thyroid tissue is best determined by ultrasound

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