A 2-month-old girl is brought to the emergency department by her parents because of a 6-week history of constipation. She has also had poor feeding, sleepiness, and yellow skin during this period. Her parents are migrant workers, and she has not received routine medical care. Physical examination shows lethargy, hypotonia, jaundice, large fontanels, macroglossia, and an umbilical hernia. Which of ihe following is the most appropriate next step to establish the diagnosis?
A. Chromosomal analysis
B. Measurement of serum phenylalanine concentration
C. Thyroid function tests
D. MRI of the brain
E. Muscle biopsy
A 2-month-old girl is brought to the emergency department by her parents because of a 6-week history of constipation. Sh
-
answerhappygod
- Site Admin
- Posts: 899603
- Joined: Mon Aug 02, 2021 8:13 am