<prompt> Patent vitello-intestinal duct should preferably be operated at:Bih6 months of age12 months of age3 years of age  <response>: Patent Vitello-intestinal Duct The resulting umbilical fistula discharges mucus and rarely, feces A patent vitello-intestinal duct should be excised, together with a Meckel;s Diveicula if present, preferably when the child is about 6 months old Ref: Bailey 27th edition Pgno : 1044 