Table 2.
Baseline Characteristics and Endoscopic Ultrasonography Findings of the Patients with Gastrointestinal Stromal Tumors and Leiomyomas of the Stomach
| Variable | GIST (n=274) | Leiomyoma (n=87) | P value |
|---|---|---|---|
| Sex | 0.047 | ||
| Male | 131 (47.8%) | 31 (35.6%) | |
| Female | 143 (52.2%) | 56 (64.4%) | |
| Age (years, mean±SD) | 60.3±11.8 | 51.3±12.2 | <0.001 |
| Location | <0.001 | ||
| Cardia | 34 (12.4%) | 63 (72.4%) | |
| Antrum/body/fundus | 240 (87.6%) | 24 (27.6%) | |
| Dimpling or ulcer | 0.003 | ||
| Absent | 222 (81.0%) | 82 (94.3%) | |
| Present | 52 (19.0%) | 5 (5.7%) | |
| Tumor shape | 0.008 | ||
| Non-elongated | 215 (78.5%) | 56 (64.4%) | |
| Elongated | 59 (21.5%) | 31 (35.6%) | |
| Mucosal erythema | 0.167 | ||
| Absent | 218 (79.6%) | 75 (86.2%) | |
| Present | 56 (20.4%) | 12 (13.8%) | |
| Tumor growth | <0.001 | ||
| Endophytic | 127 (46.4%) | 65 (74.7%) | |
| Exophytic | 103 (37.6%) | 16 (18.4%) | |
| Mixed | 44 (16.1%) | 6 (6.9%) | |
| Lobulation | 0.005 | ||
| Absent | 225 (82.1%) | 59 (67.8%) | |
| Present | 49 (17.9%) | 28 (32.2%) | |
| Size (cm) | <0.001 | ||
| Mean±SD | 2.91±1.7 | 2.04±1.01 | 0.001 |
| <2.0 | 77 (28.1%) | 44 (50.6%) | |
| 2‒3.5 | 129 (47.1%) | 37 (42.5%) | |
| >3.5 | 68 (24.8%) | 6 (6.9%) | |
| Echogenicity | 0.002 | ||
| Hypoechoic | 104 (38%) | 43 (49.4%) | |
| Isoechoic | 119 (43.4%) | 41 (47.1 %) | |
| Hyperechoic | 51 (18.6%) | 3 (3.5%) | |
| Homogeneity | <0.001 | ||
| Homogenous | 159 (58.0%) | 81 (93.1%) | |
| Heterogenous | 115 (42.0%) | 6 (6.9%) | |
| Hyperechoic spots | 0.28 | ||
| Absent | 208 (75.9%) | 61 (70.1%) | |
| Present | 66 (24.1%) | 26 (29.9%) | |
| Anechoic spaces | <0.001 | ||
| Absent | 208 (75.9%) | 84 (96.6%) | |
| Present | 66 (24.1%) | 3 (3.4%) | |
| Marginal irregularity | 0.127 | ||
| Regular | 247 (90.1%) | 83 (95.4%) | |
| Irregular | 27 (9.9%) | 4 (4.6%) |
GIST, gastrointestinal stromal tumor; SD, standard deviation.