Table 1 Consensus criteria revised by the National Institutes of Health (NIH) in 2008. Reference to Joensuu et al.6
Risk category | Tumor size (cm) | Mitotic index (per 50 HPFs) | Primary tumor site |
|---|---|---|---|
Very low risk | < 2.0 | ≤ 5.0 | Any |
Low risk | 2.1–5.0 | ≤ 5.0 | Any |
Intermediate risk | 2.1–5.0 | > 5.0 | Gastric |
< 5.0 | 6.0–10.0 | Any | |
5.1–10.0 | ≤ 5.0 | Gastric | |
High risk | Any | Any | Tumor rupture |
> 10.0 | Any | Any | |
Any | > 10.0 | Any | |
> 5.0 | > 5.0 | Any | |
2.1–5.0 | > 5.0 | Non-gastric | |
5.1–10.0 | ≤ 5.0 | Non-gastric |
