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The 'malignant colon polyp'. A critique and opinion
1Department of Surgery, College of Physicians and Surgeons, Columbia University, New York, New York 10032.
Surgical Endoscopy
|January 1, 1987
Summary
Surgical resection above the distal rectum after colonoscopic polyp removal is debated. Resection is typically advised for sessile, villous adenomas with deep invasion or inadequate margins, if the patient is fit.
Area of Science:
- Gastroenterology
- Surgical Oncology
- Colorectal Surgery
Background:
- Controversy exists regarding the necessity of surgical resection above the distal rectum after colonoscopic removal of malignant polyps.
- Sessile, villous adenomas are associated with a higher risk of malignant spread compared to pedunculated, tubular, or villous adenomas.
Purpose of the Study:
- To clarify the indications for surgical resection in the upper rectum following endoscopic removal of malignant polyps.
- To define criteria for recommending further surgical intervention based on polyp histology and margin status.
Main Methods:
- Review of current literature and guidelines on the management of malignant polyps.
- Analysis of risk factors associated with local recurrence and metastasis after endoscopic polypectomy.
Main Results:
- Malignant invasion beyond the muscularis mucosae is a key indicator for resection.
- Insufficient tumor-free margin of the polyp stalk also necessitates consideration for resection.
- Sessile, villous histology increases the risk, influencing treatment decisions.
Conclusions:
- Surgical resection above the distal rectum is generally recommended for malignant polyps with deep submucosal invasion (beyond muscularis mucosae) or inadequate resection margins.
- Patient's clinical condition is a crucial factor in deciding on surgical intervention.