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Doctors' Answers to "Frequently Asked Questions" - Naval Infection
Answer: A persistent infection in the navel usually represents a patent urachus or urachial cyst.
The urachus is an embryonic remnant left over from your time in the womb. There is a
connection from the bladder to the umbilicus (belly button) before you are born to allow the
urine to proceed to the mother. This is supposed to close at birth, but occasionally may not
close completely. This leads to recurrent infections in the umbilicus as small amounts of
urine come out the umbilicus. Repair is surgical and is very simple.