Early Versus Late Laparoscopic Exploration of Common Bile Duct After Failure of Extraction of Common Bile Duct Stones by ERCP

Inclusion Criteria: 1. All patients that presented with calcular obstructive jaundice 2ry to CBD stones. 2. Failed of extraction of common bile duct stone by ERCP. Exclusion Criteria: 1. patients presented by cholangitis. 2. patients presented by acute pancreatitis. 3. Patients that developed post ERCP pancreatitis ,bleeding , perforation. 4. history of previous biliary surgery rather than cholecystectomy. 5. history of major upper abdominal surgery. 6. pregnant females. 7. patients with liverchirosis, abdominal malignancy , and those unfit for surgery.