Table 1. Clinicopathological characteristics of 99 cases of omental GISTs.
| Characteristics | Parameters |
|---|---|
| Age (∑ = 99) | |
| ≤60 | 53 (53.5%) |
| >60 | 46 (46.5%) |
| Gender (∑ = 93) | |
| Male | 55 (59.1%) |
| Female | 38 (40.9%) |
| Accompanied tumor (∑ = 41) | |
| GISTs with other locations | 7 (17.1%) |
| Other type of tumors | 7 (17.1%) |
| Symptoms (∑ = 51) | |
| Abdominal pain | 25 (49.0%) |
| Abdominal mass | 10 (19.6%) |
| Abdominal distension | 8 (15.7%) |
| Fatigue | 5 (9.8%) |
| Abdominal discomfort | 4 (7.8%) |
| Weight loss | 4 (7.8%) |
| Location (∑ = 99) | |
| Lesser omentum | 21 (21.2%) |
| Greater omentum | 78 (78.8%) |
| Tumor size (∑ = 98) | |
| ≤2 cm | 3 (3.1%) |
| 2.1–5 cm | 9 (9.2%) |
| 5.1–10 cm | 19 (19.4%) |
| >10 cm | 67 (68.3%) |
| Imaging features (∑ = 40) | |
| Solid | 16 (40.0%) |
| Cystic | 3 (7.5%) |
| Mixed | 21 (52.5%) |
| Surgical resection (∑ = 95) | |
| Complete resection | 86 (90.5%) |
| Incomplete resection | 4 (4.2%) |
| No surgery | 5 (5.3%) |
| Histological type (∑ = 87) | |
| Spindle | 42 (48.3%) |
| Epithelioid | 29 (33.3%) |
| Mixed | 16 (18.4%) |
| Mitotic index (∑ = 85) | |
| ≤5 | 53 (62.4%) |
| >5 | 32 (37.6%) |
| Immunohistochemisty | |
| CD117 (∑ = 58) | 49 (84.5%) |
| CD34 (∑ = 43) | 36 (83.7%) |
| DOG-1 (∑ = 9) | 8 (88.9%) |
| Mutational status (∑ = 27) | |
| KIT | 9 (33.3%) |
| PDGFRA | 14 (51.9%) |
| Wild type | 5 (18.5%) |
| NIH risk category (∑ = 96) | |
| Very low risk | 2 (2.1%) |
| Low risk | 5 (5.2%) |
| Intermediate risk | 1 (1.0%) |
| High risk | 88 (91.7%) |
| Adjuvant therapy (∑ = 58) | |
| Yes | 15 (25.9%) |
| No | 43 (74.1%) |
| Follow up time | |
| Mean (m, ±SD) | 36.6 ± 36.4 |
| Median (m, range) | 21.1 (2, 134) |
| Survival data | |
| Recurrence or metastasis | 7 |
| GISTs related deaths | 6 |
| Survival rates (%) | |
| 1-/3-/5-year DFS | 90.8/86.3/86.3 |
| 1-/3-/5-year DSS | 100.0/87.9/80.6 |