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Related Experiment Videos

Does omentectomy prevent malignant small bowel obstruction?

J L Weese1, F D Ottery, S E Emoto

  • 1Department of Surgery, University of Wisconsin, Madison.

Clinical & Experimental Metastasis
|July 1, 1988
PubMed
Summary
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Routine omentectomy during colectomy may reduce the incidence of malignant small bowel obstruction (S.B.O.) by preventing colon cancer cell implantation in the omentum, according to a rat study.

Area of Science:

  • Oncology
  • Surgical Oncology
  • Gastroenterology

Background:

  • The omentum is known to collect and disseminate cancer cells in ovarian cancer surgery.
  • The omentum's role in colon cancer metastasis and subsequent complications like small bowel obstruction (S.B.O.) is less understood.

Purpose of the Study:

  • To investigate if the omentum serves as a site for colon tumor implantation contributing to S.B.O.
  • To determine if omentectomy during colectomy reduces the incidence of S.B.O. in a rat model.

Main Methods:

  • Utilized Fischer 344 rats with transplantable carcinogen-induced colon cancer.
  • Compared outcomes between rats undergoing omentectomy and sham-operated controls.

Main Results:

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  • Animals with omentectomy showed significantly lower rates of omental tumors (26%) and malignant S.B.O. (16%) compared to sham-operated animals (75% and 85%, respectively).
  • Statistical analysis confirmed a significant reduction in S.B.O. incidence post-omentectomy (P < 0.001).

    • Conclusions:

    • The omentum is a significant site for colon tumor implantation leading to S.B.O. in this rat model.
    • Routine omentectomy during colectomy is a simple procedure that may reduce postoperative morbidity by decreasing S.B.O. incidence.