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Complications associated with loop ileostomy: analysis of risk factors

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Loop ileostomy is a common surgical procedure but is associated with complications such as outlet obstruction (OO), parastomal hernia (PH), and high-output stoma (HOS). This study aimed to identify risk factors for these complications, as well as their causal relationships.


The study included 188 consecutive patients who underwent loop ileostomy between April 2016 and September 2021. Clinical factors and postoperative stoma-related complications (OO, HOS, and PH) were analyzed retrospectively. Stoma-related factors were evaluated using specific measurements from computed tomography (CT) scans. The incidence, clinical course, and risk factors for the stoma-related complications were investigated.


OO was diagnosed in 28 cases (15.7%), PH in 60 (32%), and HOS in 57 (31.8%). A small longitudinal stoma diameter at the rectus abdominis level on CT and a right-sided stoma were significantly associated with OO. Creation of an ileostomy for anastomotic leakage was independently associated with HOS. Higher body weight and a large longitudinal stoma diameter at the rectus abdominis level on CT were significantly associated with PH. There was a significant relationship between the occurrence of OO and HOS. However, the association between OO and PH was marginal.


This study identified key risk factors for OO, HOS, and PH as complications of loop ileostomy and their causal relationships. Our findings provide insights that may guide the prevention and management of complications related to loop ileostomy.

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Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.


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Authors and Affiliations



Y.M. led the manuscript writing and coordinated the research efforts. N.A., R.K., and H.N. contributed to data collection and analysis. G.Y. and S.H. assisted in manuscript revision and provided critical feedback. All authors reviewed the manuscript and approved the final version for publication.

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Correspondence to Suguru Hasegawa.

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Matsumoto, Y., Aisu, N., Kajitani, R. et al. Complications associated with loop ileostomy: analysis of risk factors. Tech Coloproctol 28, 60 (2024).

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