Spigelman Staging System for Duodenal Polyposis

**Semantic type:** Classification

**Definition:** A classification system used to assess the severity of duodenal polyps in patients with familial adenomatous polyposis (FAP). Scoring is based on the point total assigned for polyp number (1-3 points), polyp size (1-3 points), polyp histology (1-3 points), and grade of dysplasia (1-3 points).

**Synonyms:** - Spigelman staging based on Spigelman score