Table 1.
Descriptive characteristics of patients diagnosed with soft tissue pelvic sarcoma between 2000 and 2019 in the Surveillance, Epidemiology, and End Results database according to most frequent histologic subtypes. Data are shown as medians for continuous variables or as counts and percentages (%) for categorical variables. IQR: interquartile range.
| Pelvic Soft Tissue Sarcoma | Overall n = 2491 |
Liposarcoma n = 1017 (41%) |
Leiomyosarcoma n = 976 (39%) |
Sarcoma NOS n = 498 (20%) |
p-Value |
|---|---|---|---|---|---|
| Age at diagnosis (years) | |||||
| Median (IQR) | 62 (52–72) | 62 (51–71) | 62 (51–71) | 65 (52–75) | 0.002 |
| Sex—male | 1358 (55%) | 731 (72%) | 365 (37%) | 262 (53%) | <0.001 |
| Surgical resection | 1914 (77%) | 909 (89%) | 789 (81%) | 216 (43%) | <0.001 |
| Grade | |||||
| High-grade | 1013 (41%) | 286 (28%) | 434 (44%) | 293 (59%) | <0.001 |
| Unknown | 566 (23%) | 129 (13%) | 284 (29%) | 153 (31%) | |
| Tumor size (mm) | |||||
| Median (IQR) | 100 (60–150) | 115 (73–170) | 88 (50–130) | 105 (70–146) | <0.001 |
| M stage | |||||
| M1 | 510 (20%) | 60 (6%) | 245 (25%) | 205 (41%) | <0.001 |
| Tumor origin | |||||
| Non-visceral | 2303 (92%) | 1017 (100%) | 843 (86%) | 443 (89%) | <0.001 |
| Visceral | 188 (8%) | 0 (0%) | 133 (14%) | 55 (11%) | |
| Bladder | 131 (5%) | 0 (0%) | 91 (9%) | 40 (8%) | |
| Prostate | 57 (2%) | 0 (0%) | 42 (4%) | 15 (3%) |