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March 31, 2026Asian Journal of Endoscopic Surgery

Role of a Preoperative Completion Colonoscopy in Patients With Obstructed Colorectal Cancer Post Self‐Expandable Metallic Stent ( SEMS ) Placement as a Bridge to Surgery ( BTS )

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Authors

JGJiwei GuoSingapore General HospitalCFCherylin FuSingapore General Hospital

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Implication

Retrospective review investigates preoperative colonoscopy impact on surgery outcomes in obstructed colorectal cancer patients, suggesting improved management.

Key Points

  • Examine the effectiveness of preoperative completion colonoscopy in managing obstructed colorectal cancer after stent placement.
  • Retrospective review of patients with obstructed CRC who underwent SEMS from 2004 to 2023
  • Analyzed the presence of synchronous tumors and mucosal ischemia during colonoscopy
  • Reviewed operative decisions based on colonoscopy findings
  • SEMS placement was successful in 126 out of 140 patients.
  • Preoperative colonoscopy was attempted in 30 patients, with successful execution in 24.
  • Synchronous tumors were found in 1 of the successfully completed colonoscopies.
  • Mucosal ischemia was observed in 4 patients, influencing surgical resection decisions.
  • 35.9% of stented patients without preoperative colonoscopy never had it after surgery, leading to potential complications.

Cite This Study

Guo et al. (2026) studied this question.

synapsesocial.com/papers/69cb6526e6a8c024954b93fehttps://doi.org/10.1111/ases.70276
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The association of synchronous neoplasms with occluding colorectal cancer1985 · 54 citations
  2. 2Pooled Analysis of the Efficacy and Safety of Self-Expanding Metal Stenting in Malignant Colorectal Obstruction2004 · 656 citations
  3. 3Preoperative Colonoscopy for Detection of Synchronous Neoplasms after Insertion of Self-Expandable Metal Stents in Occlusive Colorectal Cancer: Comparison of Covered and Uncovered Stents2013 · 33 citations
  4. 4Pre-operative or postoperative colonic examination for synchronous lesions in colorectal cancer1988 · 55 citations