A 41-day-old girl presented to the emergency department with a new dark red mass protruding from the umbilicus noted 3.5 hours prior to presentation. The patient’s mother reported the umbilical stump fell off at 4 days of life, but the patient continued to have intermittent clear green drainage from a small mass at the base of the umbilicus. The patient was born full-term with an otherwise unremarkable medical history.