Migration-A Usual Complication of Covered Self-Expandable Metallic Stent with an Unusual Course-Case Report

The authors report a 46-year-old male with middle-third esophageal cancer and invasion of the left main bronchus who underwent an insertion of a left main bronchial stent (Ultraflex, Boston Scientific, 14 mm×40 mm) to relieve airway stenosis, since the widest portion of the left main bronchus was only 11 mm. After 3 months, left main bronchial stent migration with right main bronchial orifice obstruction was noted on the chest computed tomography and flexible bronchoscopy. Rigid bronchoscopy was performed to remove the migrated stent and a new larger stent was inserted (Ultraflex, Boston Scientific, 16 mm×40 mm). Left main bronchial stent migration with right main bronchial orifice total obstruction is rarely encountered in the literature. Migration rarely occurs 3 months after an initial stent deployment, especially when a larger stent is used.