| Location Histological types | Stomach | Small intestine | Large intestine | extra-gastrointestinal |
| Spindle cell type | 45 (97) | 11 (79) | 1 (100) | 5 (100) |
| Epithelial cell type | 1 (3) | 2 (14) | 0 (0) | 0 (0) |
| Mixed cell type | 0 (0) | 1 (7) | 0 (0) | 0 (0) |