Does Local Excision Without Salvage Surgery Affect the Prognostic Outcome of Patients With Malignant Colorectal Polyp? A Long-Term Survival Analysis - Scorecard - MDSpire
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Impact of Local Excision Without Salvage Surgery on Prognosis in Patients with Malignant Colorectal Polyps: A Long-Term Survival Study

  • By

  • Vienna Man Wah Ng

  • Simon Chu

  • Anson Huen Yan Chan

  • Sok Fei Hon

  • Simon Siu Man Ng

  • June 23, 2026

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Clinical Scorecard: Impact of Local Excision Without Salvage Surgery on Prognosis in Patients with Malignant Colorectal Polyps: A Long-Term Survival Study

At a Glance

CategoryDetail
ConditionMalignant Colorectal Polyps
Key MechanismsLocal excision techniques such as endoscopic submucosal dissection (ESD) and transanal minimally invasive surgery (TAMIS) are used for treatment.
Target PopulationPatients with T1 malignant colorectal polyps diagnosed after local excision.
Care SettingTeaching hospitals and regional district hospitals in Hong Kong.

Key Highlights

  • 40%-60% of stage I colorectal cancer cases are diagnosed as T1 malignant polyps.
  • Risk of lymph node metastasis ranges from 1.2% to 36.4% based on pathological features.
  • Conservative management after local excision may be an oncologically safe alternative.
  • 5-year recurrence-free survival rates can be as high as 100% in selected patients.
  • Salvage surgery is debated due to associated morbidity and mortality.

Guideline-Based Recommendations

Diagnosis

  • Assessment of histopathological features to determine risk levels.

Management

  • Patients with high-risk features should be considered for salvage surgery.

Monitoring & Follow-up

  • Regular follow-up with surveillance sigmoidoscopy or colonoscopy post-excision.

Risks

  • Colorectal resection is associated with 30% morbidity and 1%-5% mortality.

Patient & Prescribing Data

Patients with T1 malignant colorectal polyps post-local excision.

Active surveillance is recommended for low-risk patients who refuse or are unfit for salvage surgery.

Clinical Best Practices

  • Multidisciplinary team discussions for cases with uncertain histopathological details.
  • Regular monitoring of serum carcinoembryonic antigen (CEA) levels.

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