Comparison of endoscopic ultrasonographic (EUS) features in benign stromal cell tumours (SCTs) and SCTs with malignant potential (univariate analysis)
| Features | Borderline SCTs (n=13) |
Leiomyosarcomas (n=9) |
SCTs with malignant potential (borderline tumours + leiomyosarcoma) (n=22) | Benign leiomyomas (n=34) |
SCTs with malignant potential versus benign leiomyomas (p value) |
| Maximal diameter >30 mm | 10 (77) | 7 (78) | 17 (77) | 14 (41) | 0.003 |
| Ulceration | 5 (38) | 7 (78) | 12 (54) | 10 (29) | 0.06 |
| Lymph nodes | 1 (8) | 4 (44) | 5 (23) | 1 (3) | 0.02 |
| Heterogeneity with cystic spaces | 6 (46) | 3 (33) | 9 (41) | 2 (6) | 0.001 |
| Heterogeneity without cystic spaces | 3 (23) | 3 (33) | 6 (27) | 11 (32) | 0.9 |
| Exophytic development | 6 (46) | 2 (22) | 8 (36) | 4 (12) | 0.03 |
| Extraluminal irregular margins | 6 (46) | 5 (56) | 11 (50) | 2 (6) | 0.0002 |
Values in parentheses are percentages.