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Spigelman classification of duodenal polyposis (adenomas in FAP)[15]
|
Number of points |
|||
| 1P | 2P | 3P | |
| Number of polyps | 1-4 | 5-20 | > 20 |
| Polyp size (mm) | 1-4 | 5-20 | > 10 |
| Histology | Tubulous | Tubulovillous | Villous |
| Dysplasia | Mild | Moderate | Severe |
| Stage | Spigelman score | ||
| 0 | 0 | ||
| I | 1-4 | ||
| II | 5-6 | ||
| III | 7-8 | ||
| IV | 9-12 | ||
