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) |
