Table 1. Patient (n=44) and tumour (n=45) characteristics.
| n (%) | |
|---|---|
| Sex | |
| Male | 19 (43) |
| Female | 25 (57) |
| Age (years), median (range) | 65.5 (36–87) |
| Risk classification | |
| Very low risk | 4 (9) |
| Low risk | 13 (29) |
| Intermediate risk | 13 (29) |
| High risk | 15 (33) |
| Primary site | |
| Stomach | 29 (64) |
| Small intestine | 12 (27) |
| Colon | 3 (7) |
| Unknown | 1 (2) |
| Histology | |
| Spindle cell | 37 (82) |
| Epithelioid | 7 (16) |
| Mixed | 1 (2) |
| Tumour size | |
| ⩽5 cm | 19 (42) |
| 5–10 cm | 17 (38) |
| >10 cm | 9 (20) |
| Mitotic figures | |
| ⩽5 per 50 HPF | 38 (84) |
| >5 per 50 HPF | 7 (16) |
| KIT mutation | |
| Exon 11 mutation | 28 (62) |
| Exon 9 mutation | 1 (2) |
| No exon 11 or 9 mutation | 15 (33) |
| Unknown | 1 (2) |
Abbreviation: HPF=high power fields.