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Risk group classification according to AFIP criteria
| Size (cm) | Mitotic count (50 HPF) | Location |
|---|---|---|
| Very low risk | ||
| 2–5 | ≤5 | Gastric |
| Low risk | ||
| >5 and ≤10 | ≤5 | Gastric |
| 2–5 | ≤5 | Intestinal |
| Intermediate risk | ||
| >10 | ≤5 | Gastric |
| >5 and ≤10 | ≤5 | Intestinal |
| 2–5 | >5 | Gastric |
| High risk | ||
| 2–5 | >5 | Intestinal |
| >10 | ≤5 | Intestinal |
| >5 and ≤10 | >5 | Gastric |
| >10 | >5 | Gastric |
| >5 and ≤10 | >5 | Intestinal |
| >10 | >5 | Intestinal |
Tumor rupture has the consideration of peritoneal micro-metastases
