Treatment of retained CBD stone is?

Endoscopic Sphincterotomy REF: Maingot's 10th e p. 1746 Retained stone: stones diagnosed sholy after cholecystectomy Recurrent stone: diagnosed months or years after Treatment of retained stones: Found on T tube cholangiogram Removal of stones radiologically after maturation of T tube tract after 4 weeks Treatment of recurrent CBD stones Endoscopic sphincterotomy is treatment of choice since T tube is not present after 4 weeks In unsuccessful cases ESWL has proven beneficial