A 3-Week-Old Boy with Discharge from the Umbilicus Is Brought

A 3-week-old boy with discharge from the umbilicus is brought to the clinic by his parents.  His postnatal course was uncomplicated, with shriveling of the cord around 14 days of life.  Vital signs are normal.  Examination of the area reveals a small reducible umbilical hernia, minimal clear to straw-colored discharge from the umbilicus, and erythema around the area.  Laboratory results are as follows: Which of the following is the most likely cause of this child's condition?

A) Absence of neutrophil migration
B) Duplication of the ureter
C) Incomplete closure of anterior abdominal wall
D) Persistence of allantois remnant
E) Persistence of omphalomesenteric duct

Correct Answer:

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