2025 Volume 67 Issue 12 Pages 2428-2434
A 75-year-old man who had undergone total left nephroureterectomy for left ureteral cancer one year earlier developed severe stenosis at the inferior duodenal angle due to metastatic recurrence. To relieve the obstruction, two uncovered stents were placed. The patient responded well to chemotherapy and immunotherapy; however, approximately 9 months after stenting, the stents migrated due to tumor shrinkage. Additionally, the patient developed a small bowel obstruction caused by the migrated stent and was admitted to the hospital on an emergency basis. Despite the placement of an ileus tube, the stent remained in the lower ileum and could not be excreted spontaneously. The stent was successfully retrieved via transanal single-balloon endoscopy, using the invagination method. The patient was discharged on postoperative day 8.
We report a case of a migrated duodenal stent causing intestinal obstruction that was successfully managed with single-balloon endoscopy.
