12 June 2026
: Case report 
Strangulated Small Bowel Obstruction Caused by a Migrated Ring-Shaped Intrauterine Device: Two Case Reports and a Literature Review
Unusual clinical course, Challenging differential diagnosis, Management of emergency care, Educational Purpose (only if useful for a systematic review or synthesis)
Yifan Lu BDEF 1, Jiaxu Zhu BD 1, Ziwen Wang D 1, Xiangtian Shi BF 1, Xingchi Jiang BF 1, Dong Shang AG 1, Qingkai Zhang AE 1*, Shuang Li ABEG 1DOI: 10.12659/AJCR.952535
Am J Case Rep 2026; 27:e952535
Figure 1 Imaging, intraoperative, and pathological findings in Case 1. (A) Abdominal film showing a metallic ring-shaped IUD located in the pelvic cavity. (B) 3D-reconstructed CT image demonstrating the position of the migrated IUD. (C) Coronal CT view of the IUD location. (D) Axial abdominal CT demonstrating migration of the IUD (yellow arrow). (E) CT image highlighting thickened intestinal wall and surrounding exudation (green circle). (F) Intraoperative view showing the IUD causing intestinal obstruction and necrosis; yellow arrow indicates the intraoperative position of the IUD. (G) Resected necrotic bowel segment and the retrieved IUD. (H) Histopathological examination of the resected bowel showing transmural necrosis.