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Intra-abdominal Surgery and Intestinal Syndromes After Pelvic Radiation Therapy.

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Intra-abdominal surgery worsens radiation-induced intestinal syndromes in cancer survivors. This surgery increases the intensity of urgency-tenesmus, fecal leakage, gas, and blood discharge after pelvic radiation therapy.

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Area of Science:

  • Oncology
  • Gastroenterology
  • Surgical Oncology

Background:

  • Pelvic cancer survivors often undergo radiation therapy, which can cause intestinal syndromes.
  • Intra-abdominal surgery is a common procedure, but its impact on radiation-induced intestinal syndromes is not fully understood.

Purpose of the Study:

  • To investigate the effects of intra-abdominal surgery on the intensity of five radiation-induced intestinal syndromes in survivors of pelvic cancer.

Main Methods:

  • Analysis of 623 women treated with pelvic radiation therapy for gynecologic cancers.
  • Inclusion of 344 matched controls who did not receive irradiation.
  • Assessment of five intestinal syndromes (urgency-tenesmus, fecal leakage, mucus discharge, gas discharge, blood discharge) based on patient-reported outcomes and factor analysis.

Main Results:

  • Intra-abdominal surgery significantly increased the intensity of urgency-tenesmus, fecal leakage, gas discharge, and blood discharge syndromes.
  • The urgency-tenesmus syndrome was particularly affected by intra-abdominal surgery.
  • Appendectomy alone had minimal effect, but combined with other surgeries, it led to the highest syndrome scores.

Conclusions:

  • Intra-abdominal surgery is a risk factor for increased intensity of radiation-induced intestinal syndromes in gynecologic cancer survivors.
  • Consideration of prior intra-abdominal surgery may warrant closer attention to intestinal radiation dose during therapy.