Ok I had gall latter removed 1992 and 1/2 thyroid removed 2005 then bile duct fusion 2007 then other 1/2 thyroid removed 2011 radioactive iodine in 2011 and a radioactive scan in November last year. Now I am having stones in bile duct. Just had an ERCP they put in plastic stent will go back in in March and remove it but I have a G2 drain right now. My question is can radioactive iodine cause gallstones?