Table 1.
Clinicopathologic characteristics of patients with gastric gastrointestinal stromal tumors
| No. of patients (%) | |
|---|---|
| Sex | |
| Male | 368 (49.7) |
| Female | 372 (50.3) |
| Age (years) | |
| <60 | 373 (50.4) |
| ≥60 | 367 (49.6) |
| Tumor size (cm) | |
| ≤2 | 162 (21.9) |
| >2 ≤ 5 | 313 (42.3) |
| >5 ≤ 10 | 190 (25.7) |
| >10 | 75 (10.1) |
| Mitotic index (/50 HPF) | |
| <5 | 538 (72.7) |
| ≥5 ≤ 10 | 13 (15.3) |
| >10 | 89 (12.0) |
| Tumor location | |
| Upper third | 349 (47.2) |
| Middle third | 296 (40.0) |
| Lower third | 95 (12.8) |
| Histological subtype | |
| Spindle type | 667 (90.1) |
| Epithelioid type | 21 (2.8) |
| Mixed type | 52 (7.0) |
| Tumor rupture | |
| No | 735 (99.32) |
| Yes | 5 (0.7) |
| Nuclear atypia | |
| No | 594 (90.4) |
| Yes | 63 (9.6) |
| Tumor necrosis | |
| No | 618 (83.5) |
| Yes | 122 (16.5) |
| Postoperative imatinib | |
| No | 551 (74.5) |
| Yes | 189 (25.5) |