TABLE 2.
Overview of the National Comprehensive Cancer Network20 Criteria for Risk Assessment in Gastrointestinal Stromal Tumor
| Mitotic Index (per 50 HPFs) | Tumor Parameter |
Risk of Progressive Disease (%) |
|||
|---|---|---|---|---|---|
| Size (cm) | Gastric (%) | Duodenum | Jejunum/Ileum | Rectum | |
| ≤ 5 | ≤ 2 | 0 (none) | 0 (none) | 0 (none) | 0 (none) |
|
| |||||
| ≤ 5 | > 2 to ≤ 5 | 1.9 (very low) | 4.3 (low) | 8.3 (low) | 8.5 (low) |
|
| |||||
| ≤ 5 | > 5 to ≤ 10 | 3.6 (low) | 24 (moderate) | Insufficient data | Insufficient data |
|
| |||||
| ≤ 5 | > 10 | 10 (moderate) | 52 (high) | 34 (high) | 57 (high) |
|
| |||||
| > 5 | ≤ 2 | None* | High* | Insufficient data | 54 (high) |
|
| |||||
| > 5 | > 2 to ≤ 5 | 16 (moderate) | 73 (high) | 50 (high) | 52 (high) |
|
| |||||
| > 5 | > 5 to ≤ 10 | 55 (high) | 85 (high) | Insufficient data | Insufficient data |
|
| |||||
| > 5 | > 10 | 86 (high) | 90 (high) | 86 (high) | 71 (high) |
Abbreviation: HPF, high-power field.
*
Small numbers of cases.