Table 1.
Clinicopathologic Features
| Initial symptoms (multiple mentions possible) | n | % of 90 | |
|---|---|---|---|
| No clinical symptoms | 25 | 28% | |
| Pain | 33 | 37% | |
| GI bleeding | 25 | 28% | |
| Anemia | 6 | 7% | |
| Localization of primary tumour | n | % of 95 | |
| Stomach | 58 | 61% | |
| Small bowel | 29 | 31% | |
| Jejunum | 9 | 9% | |
| Ileum | 17 | 18% | |
| Duodenum | 3 | 3% | |
| Colon | 1 | 1% | |
| Esophagus | 2 | 2% | |
| Others (EGIST, etc.) | 5 | 5% | |
| Second neoplasias | n | % of 95 | |
| Total | 30 | 32% | |
| n | % of 30 | ||
| Colorectal cancer | 5 | 17% | |
| Prostate cancer | 4 | 13% | |
| Breast cancer | 3 | 10% | |
| Gastric cancer | 3 | 10% | |
| Myometrial or cervical cancer | 2 | 7% | |
| Renal or urothelian cancer | 2 | 7% | |
| Pancreatic cancer | 1 | 3% | |
| Others | 10 | 33% | |
| Histomorphology | n | % of 92 | |
| Spindle cell GIST | 80 | 87% | |
| Epithelioid/Mixed pattern | 12 | 13% | |
| Mixed pattern | 11 | 12% | |
| Epithelioid | 1 | 1% | |
| Risk of Malignancy (Fletcher et al.) | n (sto/smbo/ot) | n | % of 93 |
| High risk | 21/13/5 | 39 | 42% |
| Intermediate risk | 13/5/1 | 19 | 20% |
| Low risk | 14/7/0 | 21 | 23% |
| Very low risk | 8/4/2 | 14 | 15% |
sto = stomach, smbo = small bowel, ot = others