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Session:: ePosters-Sat-M8: Colon & Colorectal Cancer

EP184 - The Association of Race, Ethnicity and Socioeconomic Factors on Colorectal Cancer-Associated Small Bowel Obstruction (CRCaSBO)

Saturday, May 9, 2026
3:36 PM - 3:41 PM ET

    ePoster Presenter(s)

  • Ivy Huang, MD, MEHP (she/her/hers)

    Colorectal Surgery Fellow
    University of Pennsylvania
    University of Pennsylvania
    Philadelphia, PA, United States

    Disclosure information not submitted.

    View ePoster

    • Senior Author(s)

  • EL

    Edward H. Livingston, MD

    Professor
    UCLA School of Medicine
    Los Angeles, California, United States

    Disclosure information not submitted.

    • Author(s)

  • AL

    Anne Lin, MD, MSHS

    Professor of Surgery
    UCLA School of Medicine
    Los Angeles, California, United States

    Disclosure information not submitted.

Purpose/Background: Race, ethnicity, and socioeconomic conditions are associated with outcomes disparities. Disadvantaged populations may present to the healthcare system with later-stage disease for preventable cancers like colorectal cancer (CRC). Colorectal cancer associated small bowel obstruction (CRCaSBO) may thus be associated with poor socioeconomic status.

Methods/Interventions: This was a retrospective cohort analysis of patients with CRCaSBO treated between 1/1/2016 to 10/1 2024 at a large, urban, multicenter integrated health system. The main outcome was the incidence of SBO occurring concomitantly with a diagnosis of CRC in the same clinical encounter. Race and ethnicity were imputed using Rand's Modified Bayesian Improved First Name, Surname, and Geocoding (mBIFSG) program. The CDC's Social Vulnerability Index (SVI) was determined from patient geocodes.

Results/Outcomes: There were 5050 patients with non-CRC associated small bowel obstruction and 559 with CRCaSBO. The mean SVI was lowest for White patients (0.27 ± 0.21) and highest for Hispanic patients (0.62 ± 0.28). There were no associations found between race, ethnicity, or SVI and the presence of CRCaSBO. The racial and ethnic distribution of CRCaSBO cases was similar to that for non-CRC associated SBO and the overall patient population studied. Treatment of 9,615 to 16,667 patients is required to eliminate disparities in the incidence of CRC and 13,605 to 22,222 for one fewer death.

Conclusion/Discussion: Despite Black and Hispanic patients having higher social vulnerability than White patients, neither race nor ethnicity was associated with CRCaSBO. The number needed to treat associated with CRC disparities may be useful for prioritizing preventative services.