Indication for Prophylactic Colorectal Surgery in FAP: 5 or Fewer Rectal Adenomas and Fewer Than 500 Colonic Adenomas

In familial adenomatous polyposis, the decision to proceed with prophylactic colorectal surgery depends on the burden and distribution of adenomas at colonoscopy. When polyp counts fall within specific thresholds, particular surgical strategies are indicated — and the choice of approach matters.

Clinical Scenario

This protocol addresses patients with FAP who have an indication for prophylactic colorectal surgery and in whom colonoscopy shows 5 or fewer rectal adenomas and fewer than 500 colonic adenomas.

Surgical Approach

When polyposis can no longer be managed conservatively, a surgical intervention targeting the rectum is considered. The full protocol specifies the precise operative strategy, the criteria that trigger it, and the clinical conditions under which it is discussed with the patient.

Full regimen details, criteria, and sequencing available via the structured protocol below.

Instant Access to Structured Evidence-Based Regimens

References

IRA may be offered to: Patients with 5 or fewer rectal adenomas and less than 500 colonic adenomas.
5 or fewer rectal adenomas AND fewer than 500 colonic adenomas.
Secondary proctectomy should be considered when polyposis is no longer conservatively manageable or in the presence of two or more polyps with HGD.
If they are not manageable or meet the criteria indicating proctocolectomy, a surgical approach with secondary proctectomy should be considered and discussed with the patient.

DOI: 10.1093/bjs/znae263

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