<prompt> A neonate has a small reducible protrusion through a defined ring at the umbilicus. His pediatrician indicates to the parents that this will likely close spontaneously. Which of the following congenital malformations is present?Umbilical herniaSymptomatic patent urachusPatent omphalomesenteric ductOmphalocele  <response>: In most case, an umbilical hernia closes spontaneously by age 4 and requires no surgery unless there is incarceration. A symptomatic patent urachus drainage of urine at the umbilicus is typically surgically excised. A patent omphalomesenteric duct Meckel diveiculum is promptly repaired to minimize the potential for intestinal obstruction or prolapse. Omphalocele and gastroschisis are defects that require surgical repair. 