A 3-year-old boy is brought to the pediatrician by his mother for a wellness check. Physical examination shows a single palmar crease, slanted palpebral fissures, and epicanthal folds. Which of the following additional findings is most likely to be seen in this patient?
A) Bird’s beak sign
B) Coffee bean sign
C) Double bubble sign
D) Increased lymphoblasts
E) Target sign
