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Decision support only — guidelines never substitute for clinical judgment. Recommendations are derived from the USMSTF 2020 post-polypectomy consensus and the ACG 2026 adenomatous polyposis guideline. No patient identifiers are collected.

Spigelman Duodenal Polyposis Stage · GI Guidelines

Spigelman Duodenal Polyposis Stage

ACG 2026 / ASGE 2020 · 2026

Duodenal findings
Recommendation

Duodenal findings

Use the worst feature seen on this upper endoscopy (including the ampulla).

Number of duodenal polyps

Number of duodenal polyps*

Largest polyp size

Largest polyp size

Leave blank if no polyps.

Worst histology

Worst histology

Worst dysplasia grade

Worst dysplasia grade

Ampullary adenoma / abnormal-appearing ampullaAmpullary disease is staged separately and may warrant closer follow-up.