Comparison of magnetic resonansc cholangiography percutaneous transhepatic cholangiography and endoscopic retrograde cholangiopancreaticography in evaluation of bile duct obstruction

ABSTRACT

Background: Percutaneous transhepatic cholangiography [PTC] has been the preferred investigation to delineate the anatomy of biliary tract in patients with bile duct obstruction, whether iatrogenic obstruction or obstruction due to stone or malignant lesion. Then ERCP has been described to evaluate and to manage the obstructed common bile duct whether by papillotomy and stone retrival or by biliary stenting. Both PTC and ERCP are invasive technique and may be associated with serious complication as cholangitis and biliary injury, recently magnetic resonance cholangiography [MRC] has been described to evaluate the obstructed biliary tract and considered as a diagnostic tool superior to PTC and ERCP as its non invasive and non operator dependent technique