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editCurrently, covered self-expanding metal stents are only FDA-approved to be placed permanently. Occasionally, these stents may be placed as part of a clinical trial or as off-label use to repair esophageal leaks or fistulae. They are placed using the guidance of fluroscopy (x-ray) and endoscopy. Usually, they are left in for less than four weeks.
This article appears to need updating for current practices. Article was just de-orphaned. -LilHelpa (talk) 19:47, 17 February 2011 (UTC)