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Images from malignant hilar obstruction patients who underwent the Y-stent procedure. (A) The guide wire is located in the left intrahepatic bile duct. (B) The metal stent with a wide mesh in the middle is placed. (C) A second guide wire is located in the right intrahepatic bile duct through the wide area. (D) The second stent is located in the right intrahepatic bile duct across the wide area of the first stent through the guide wire.
