The purpose of this study is to document stent functionality and practice patterns in Canada pertaining to indications for use and stent type selection for self-expanding biliary metal stents (SEMS) when used per standard of practice.

This study is designed to provide a report of these features related to the use of WallFlex metal biliary stents used per standard of practice in Canada.

Inclusion Criteria:

• Subject indicated for biliary metal stent placement per local standard of practice
• Age 18 or older
• Willing and able to comply with study procedures and follow-up schedule
• Willing and able to provide written informed consent to participate in study

Exclusion Criteria:

• Subjects who are currently enrolled in another investigational study that would directly interfere with the current study, without prior written approval from the sponsor
• Subjects who the investigator deems at risk for device or procedure related complications per the Directions for Use (DFU)

Patients who have been diagnosed with a blockage of the bile duct which may be caused by a benign or malignant biliary stricture.