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. 2024 Feb;26(2):300-308.
doi: 10.1111/codi.16845. Epub 2023 Dec 29.

Incidence of adhesive small bowel obstruction after surgery for colorectal cancer in Sweden 2007-2016

Thorbjörn Sakari  1   2 , Filip Sköldberg  2 , Caroline E Dietrich  3 , Caroline Nordenvall  4   5 , Urban Karlbom  2
Affiliations

Incidence of adhesive small bowel obstruction after surgery for colorectal cancer in Sweden 2007-2016

Thorbjörn Sakari et al. Colorectal Dis. 2024 Feb.

Abstract

Aim: Population-based data on incidence and risk factors of adhesive small bowel obstruction (SBO) are limited. The aims of this study were to assess the risk of SBO and SBO surgery after bowel resection for colorectal cancer (CRC) and to assess whether this risk is modified by minimally invasive surgery (MIS) and radiotherapy in a retrospective national study.

Methods: CRCBaSe, a nationwide register linkage originating from the Swedish Colorectal Cancer Register, was used to identify Stage I-III CRC patients who underwent resection in 2007-2016, with follow-up throughout 2017. Matched CRC-free comparators (1:6) were included as a reference of SBO and SBO surgery incidence. The association between MIS and preoperative radiotherapy and the incidence rate of SBO was evaluated in adjusted multivariable Cox regression models.

Results: Among 33 632 CRC patients and 198 649 comparators, the 5-year cumulative incidence of SBO and SBO surgery was 7.6% and 2.2% among patients and 0.6% and 0.2% among comparators, with death as a competing risk. In all patients, MIS was associated with a reduced incidence of SBO (hazard ratio [HR] 0.7, 95% CI 0.6-0.8) and SBO surgery (HR 0.5, 95% CI 0.3-0.7). In rectal cancer patients, radiotherapy was associated with an increased incidence of SBO (HR 1.6, 95% CI 1.4-1.8) and SBO surgery (HR 1.7, 95% CI 1.3-2.3).

Discussion: Colorectal cancer surgery is associated with a marked increase in risk of SBO, compared with the general population. The incidence is further increased if open surgery or radiotherapy is performed.

Keywords: SBO; colorectal cancer; emergency surgery; small bowel obstruction.

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References

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