| Diagnostics proposed by histology | Diagnostic after immunohistochemical examination | ||||
| GIST | Leiomyosarcomas | Leiomyomas | Schwannoma | Kaposi’s sarcoma | |
| GIST | 16 | 0 | 0 | 0 | 0 |
| Benign spindle cell tumor | 3 | 0 | 1 | 0 | 0 |
| Leiomyomas | 2 | 0 | 1 | 0 | 0 |
| Malignant spindle cell tumor | 2 | 0 | 0 | 0 | 0 |
| Leiomyosarcomas | 0 | 2 | 0 | 0 | 0 |
| Schwannoma | 0 | 0 | 0 | 1 | 0 |
| Kaposi’s sarcoma | 0 | 0 | 0 | 0 | 1 |