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Kaplan Qbank USMLE



Author4 Posts
  #1


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



fragile x..c?



___________________
You become what you think you are!

  #2

I would agree.
C) DNA testing for triplet repeats.

  #3

Y

  #4

what if the boy had hypothyroidism? You would miss the diagnosis (I have to admit that this is not very likely according to the history, but...)
I would check TSH and unbound T4 first, than proceed with DNA testing.







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