Endoscopic ultrasonography is a widely accepted modality for the diagnosis of gastrointestinal and pancreatic-biliary diseases. Endoscopic ultrasonography-guided biliary drainage has attracted attention as an alternative procedure to percutaneous trans-hepatic biliary drainage, with a technical success between 75%-100% and with low complication rate. Other important advantage of endoscopic ultrasonography-guided biliary drainage compared with external percutaneous trans-hepatic biliary drainage is better quality of life due to the internal placement of the stent.
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Laboratory evaluation of efficacy of endoscopic ultrasonography and percutaneous trans-hepatic biliary drainage in malignant biliary obstruction.
Timeframe: Liver function test before the procedure and follow up changes after one week from procedures.
Radiological evaluation of efficacy of endoscopic ultrasonography and percutaneous trans-hepatic biliary drainage in malignant biliary obstruction
Timeframe: Biliary dilation before the procedures and follow up changes after one week from procedures.