Table 5. Risk Assessment of GIST, 2008 by Joensuu (145).
| Risk category | Tumor size (cm) | Mitotic rate | Duodenum |
|---|---|---|---|
| (50 HPF) |
Primary tumor site |
None |
None |
| Very low risk |
<2 |
5 |
Any |
| Low risk |
2.1-5.0 |
5 |
Any |
| Intermediate risk |
2.1-5.0 |
>5 |
Gastric |
| <5.0 |
6-10 |
Any |
|
| 5.1-10.0 |
5 |
Gastric |
|
| High risk |
Any |
Any |
Tumor rupture |
| >10.0 |
Any |
Any |
|
| Any |
>10 |
Any |
|
| >5.0 |
>5 |
Any |
|
| 2.1-5.0 |
>5 |
Nongastric |
|
| 5.1-10.0 | 5 | Nongastric |