Table 6. Spigelman Classification
| Points | Polyp Number | Polyp Size (mm) | Histology | Dysplasia |
| Stage I, 1–4 points; Stage II, 5–6 points; Stage III, 7–8 points; Stage IV, 9–12 points[80] | ||||
| 1 | 1–4 | 1–4 | Tubular | Mild |
| 2 | 5–20 | 4–10 | Tubulovillous | Moderate |
| 3 | >20 | >10 | Villous | Severe |
References
- Spigelman AD, Williams CB, Talbot IC, et al.: Upper gastrointestinal cancer in patients with familial adenomatous polyposis. Lancet 2 (8666): 783-5, 1989. [PUBMED Abstract]
