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12. A 4-year-old boy is brought for a well-child
examination. He
uses two-word phrases, can say his first name but not
his last name, and
cannot identify colors. He is just beginning toilet
training. His
7-year-old sister has a learning disability and
attends special education
classes. Genital development is Tanner stage 1;
testes are large.
Which of the following is the most appropriate next
step in diagnosis?

A
) Reexamination in 6 months

B
) Thyroid function tests

C
) DNA testing

D
) Measurement of bone age

E
) CT scan of the head
i feel its C ; key says A .. what do u think ?
c.....fragile x syndrome
agree, big testes, big timeSmile