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Cancer of the pancreas, gallbladder, or bile ducts is the most common cause of malignant obstruction of the biliary tree. Patients who have unresectable tumors have a dismal prognosis in terms of survival and quality of life. In these cases 5-year survival is less than 2% and palliation, such as the
Malignant biliary obstruction (MBO) may arise in patients with cholangiocarcinoma, pancreatic carcinoma, primary gallbladder carcinoma, hepatocellular carcinoma, or metastatic disease to the liver or portal lymph nodes. MBO is often accompanied by significant symptoms that may result in impairment
Hypothesis: Percutaneous biliary stenting is superior to endoscopic stenting in providing successful biliary drainage by 20% in patients with unresectable malignant hilar block due to carcinoma of gall bladder.
Background: Malignant biliary obstruction at the liver hilum is caused by a heterogeneous