Soehendra stent retriever as a useful delivery device of drainage stent for passing an impacted cystic duct stone in a patient with acute cholecystitis.

Endoscopic transpapillary gallbladder drainage is an alternative procedure for patients with acute cholecystitis. However, this procedure is technically challenging because the drainage stent is sometimes obstructed by an impacted cystic duct stone, even if the guidewire is advanced into the gallbladder. In this report, the front end of a standard endoscopic retrograde cholangiopancreatography catheter was cut to an appropriate length as a drainage stent for transpapillary gallbladder drainage. However, this modified stent became stuck because of an impacted cystic duct stone. The Soehendra stent retriever was used as a stent delivery device in this setting. A Soehendra stent retriever with clockwise rotation was coupled with the drainage stent. Integrated devices provide a stent tip for pushability and torqueability. The stuck drainage stent at the impacted cystic duct stone resumed advancement into the gallbladder. After stent indwelling, decoupling was easy under counterclockwise rotation of the Soehendra stent retriever.