Table 2.
Demographics of the SDHB-positive gastric and non-gastric GISTs (normal SDHB-expression).
| Site | Total cases | Male: Female | Age range (years) | Median Age (years) | ≤21 years | 22–29 years | 30–39 years |
|---|---|---|---|---|---|---|---|
| Stomach, SDHB-positive | 690 | 375:315 | 16–94 | 62 | 2 | 11 | 31 |
| Small intestine, sporadic | 243 | 136:107 | 21–86 | 60 | 1 | 7 | 20 |
| Small intestine, NF1-associated | 22 | 8:14 | 25–67 | 41 | 0 | 2 | 2 |
| Rectum | 43 | 35:8 | 17–90 | 58 | 1 | 6 | 3 |
| Colon | 23 | 11:12 | 49–88 | 66 | 0 | 0 | 0 |
| Esophagus | 7 | 5:2 | 52–68 | 61 | 0 | 0 | 0 |
| Omentum | 10 | 4:6 | 38–74 | 60 | 0 | 0 | 1 |
| Abdomen, NOS | 22 | 13:9 | 31–82 | 69 | 0 | 0 | 1 |
| Retroperitoneum | 8 | 2:6 | 21–83 | 61 | 1 | 0 | 0 |
| Total, nongastric | 378 | 214:164 | 3 | 15 | 27 |