佐久間文先生の論文が、DEN open誌にpublishされました。

DEN Open. 2023 Mar 28;3(1):e220. doi: 10.1002/deo2.220. eCollection 2023 Apr.

A case in which the tip of a plastic stent placed to prevent recurrence of walled-off necrosis penetrated the bile duct and formed a stent-stone complex

Fumi Sakuma, Atsushi Irisawa, Satoaki Noguchi, Yoko Abe, Koki Hoshi, Akira Yamamiya, Kazunori Nagashima, Ken Kashima, Yasuhito Kunogi, Koh Fukushi, Kohei Inaba, Ken Oike, Saori Furuki, Keiichi Tominaga, Kenichi Goda

Affiliations expand
PMID: 37009517 PMCID: PMC10050955 DOI: 10.1002/deo2.220
Free PMC article

Abstract
A woman in her 60s underwent endoscopic sphincterotomy for choledocholithiasis. Unfortunately, post-endoscopic retrograde cholangiopancreatography pancreatitis occurred. In addition, huge walled-off necrosis (WON) appeared as a late complication. For the infected WON, endoscopic ultrasound-guided fistuloplasty and endoscopic necrosectomy were performed, and a double pigtail plastic stent (PS) (7Fr, 7 cm) was placed to prevent a recurrence. Plain computed tomography conducted two years later showed that the stent implanted for WON had deviated. The distal end of the stent was found to have migrated into the bile duct. In addition, common bile duct stones with stents as nuclei were observed. Upon performing endoscopic retrograde cholangiography, it was revealed that the stent tip perforated the distal bile duct just above the papilla. After removal of the stent using grasping forceps, we made an incision between the duodenal – bile duct fistula and bile duct orifice using a sphincterotome. Then, the stone was removed by a balloon catheter. Although such late adverse events are rare occurrences, placement of long-term PS after treatment of WON should be followed up regularly with imaging examination, and if there is no recurrence for several months, removal of the PS at that point may be considered.

Keywords: adverse events; bile duct; fistula; stent stone complex; walled‐off necrosis.

https://pubmed.ncbi.nlm.nih.gov/37009517/