A 4-year-old boy is brought to the physician after his mother felt a mass in the left flank. Physical examination shows a painless left-sided flank mass. An ultrasound is performed. Which of the following is most likely to be seen in this patient?
A) Aniridia
B) Atresia of the choanae
C) Coloboma
D) Hypercalcemia
E) Hypoglycemia
