Strangulated Small Bowel Obstruction Caused by a Migrated Ring-Shaped Intrauterine Device: Two Case Reports and a Literature Review

Yifan Lu; Jiaxu Zhu; Ziwen Wang; Xiangtian Shi; Xingchi Jiang; Dong Shang; Qingkai Zhang; Shuang Li

doi:10.12659/AJCR.952535

12 June 2026 : Case report China

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 1}

DOI: 10.12659/AJCR.952535

Am J Case Rep 2026; 27:e952535

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Table 1 Overview of documented cases.

References	Country	Age	Type of IUD	Symptoms	Herniated bowel segment	Treatment	Length of resected bowel	Outcome	Time between placement and diagnosis
Zheng K et al []⁴	China	72	Ring-shaped IUD	Upper abdominal pain and severe vomiting	Ileocecal junction	Surgery	30 cm	Recovered	47 years
Song HX et al []⁵	China	57	Ring-shaped IUD	Abdominal pain	Small intestine	Surgery	100 cm	Recovered	Over 30 years
Yang H-W et al []⁶	China	77	Ring-shaped IUD	Diffuse lower abdominal pain and vomit and anus without exhaust and defecation	Mid-ileum	Surgery	N/A	Recovered	Over 30 years
Li Y et al []⁷	China	59	Ring-shaped IUD	Umbilical and right-sided abdominal tenderness	Small intestine	Surgery	30 cm	Recovered	Over 20 years
Xu J et al []⁸	Australia	79	Ring-shaped IUD	Severe epigastric pain	Small intestine	Surgery	60 cm	Recovered	Over 50 years
Brar R et al []⁹	England	64	Saf-T-Coil IUD	Vomiting and severe right iliac fossa pain	Ileum	Surgery	14 cm	Recovered	Over 30 years
Mellow S et al []¹⁰	New Zealand	63	Ring-shaped IUD	Abdominal pain and vomiting	Small intestine	Surgery	100 cm	Recovered	Over 30 years
Haspels AA []¹¹	USA	38	Ring-shaped IUD	Pain around the umbilicus	Ileum	Surgery	150 cm	Recovered	1 year
Loveless A et al []¹²	USA	29	LNG-IUS	Abdominal pain, constipation, nausea, and vomiting	Small intestine and adhesive band	Surgery	N/A	Recovered	N/A
Jones D []¹³	USA	24	T-shaped IUD	Abdominal pain, nausea, and vomiting	Not specified	Surgery	N/A	N/A	1.5 months
N/A – not available.

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Strangulated Small Bowel Obstruction Caused by a Migrated Ring-Shaped Intrauterine Device: Two Case Reports and a Literature Review

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