Case Report
Giant Gastrointestinal Stromal Tumor Presenting as a Palpable Abdominal Mass: An Unusual Presentation
Table 2
Risk stratification of primary gastrointestinal stromal tumors for aggressive behavior based on tumor size, site, and mitotic index [
24].
| Tumor parameters | Risk for progressive disease (%), based on site of origin | Mitotic rate | Size | Stomach | Jejunum/Ileum | Duodenum | Rectum |
| ≤5 per 50 HPF | | | | | | | ≤2 cm | None (0%) | None (0%) | None (0%) | None (0%) | | >2, ≤5 cm | Very low (1.9%) | Low (4.3%) | Low (8.3%) | Low (8.5%) | | >5, ≤10 cm | Low (3.6%) | Moderate (24%) | Insufficient data | Insufficient data | | >10 cm | Moderate (10%) | High (52%) | High (34%) | High (57%) |
| >5 per 50 HPF | | | | | | | ≤2 cm | None | High | Insufficient data | High (54%) | | >2, ≤5 cm | Moderate (16%) | High (73%) | High (50%) | High (52%) | | >5, ≤10 cm | High (55%) | High (85%) | Insufficient data | Insufficient data | | >10 cm | High (86%) | High (90%) | High (86%) | High (71%) |
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HPF: high-power field.
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