A 40yr old patient came in emergency depament with abdominal colic and features of obstructive jaundice Her cous and liver enzymes were elevate A USG was done and gallbladder was scleroatrophic and CBD was impacted with stones along with IHBR dilation Which is the next step in the MANAGEMENT of this patiemnt
cholecystectomy ERCP -MRCP CT SCAN NONE