<prompt> Cholangiography T-tube done after how many days of cholecystectomy1-5 days5-9 days10-14 days15-20 days  <response>: Cholecystectomy with choledochotomy and CBD exploration T-tube is left in place for cholangiography and removal of any retained stone T-tube cholangiogram is done on 7th - 10th day Post-operatively Remove T-tube if cholangiogram is normal If residual stone is discovered on the postoperative cholangiogram, T-tube should be left in place for 4-6 weeks for the tract to mature The stones are removed percutaneously through the matured tract by Burhennes technique Ref: Sabiston 20th edition Pgno : 1511 