A 1-month-old boy presents to your clinic with feeding intolerance, poor weight gain, and a large tongue. On exam, you notice a large posterior fontanelle and umbilical hernia. Your next step in making the diagnosis would be:
A. Barium swallow
B. Admit to the hospital for failure-to-thrive (FTT) work-up
C. Abdominal radiograph
D. CBC and blood culture
E. Follow-up on newborn screen results
A. Barium swallow
B. Admit to the hospital for failure-to-thrive (FTT) work-up
C. Abdominal radiograph
D. CBC and blood culture
E. Follow-up on newborn screen results