T-tube cholangiogram with a retained stone. Dr. Masfique A Bhuiyan FCPS.By Dr.Masfique Ahmed Bhuiyan / January 4, 2021 T-tube cholangiogram with a retained stone. Dr. Masfique A Bhuiyan FCPS. T-tube cholangiogram with a retained stone. Dr. Masfique A Bhuiyan FCPS.