Table 1 Comparison of primary and secondary chondrosarcoma of pelvis in terms of clinical characteristics
Variable | Primary | Secondary | P | |
|---|---|---|---|---|
Gender | Male | 29 (53.7%) | 18 (69.2%) | 0.23 |
Female | 25 (46.3%) | 8 (30.8%) | ||
Age | Mean ± SD (years) | 48.5 ± 12.8 | 32.2 ± 8.8 | 0.000 |
< 40 (years) | 11 (20.4%) | 21 (80.8%) | 0.000 | |
≥40 (years) | 43 (79.6%) | 5 (19.2%) | ||
Tumor Site | I | 5 (9.3%) | 7 (26.9%) | 0.023 |
I:illium | I + P | 6 (11.1) | 2 (7.7%) | |
P:periacetabulum | I + P + I-P | 10 (18.5%) | 1 (3.8%) | |
I-P:ischium-pubis | I + P + I-P + S | 2 (3.7%) | 0 | |
F:femoral | I + P + I-P + F | 1 (1.9%) | 0 | |
S:sacrum | I + P + S | 1 (1.9%) | 0 | |
I + S | 1 (1.9%) | 0 | ||
P | 3 (5.6%) | 1 (3.8%) | ||
P + I-P | 25 (46%) | 9 (34.6%) | ||
P + I-P + F | 0 | 1 (3.8%) | ||
I + P | 0 | 4 (15.4%) | ||
I + P + F | 0 | 1 (3.8%) | ||
Enneking Stage | IA | 1 (1.9%) | 2 (7.7%) | 0.439 |
IB | 3 (5.6%) | 2 (7.7%) | ||
IIA | 6 (11.1%) | 1 (3.8%) | ||
IIB | 40 (74.1%) | 21 (80.8%) | ||
III | 4 (7.4%) | 0 | ||
Soft Tissue Mass | Mean ± SD (cm) | 6.6 ± 4.3 | 10.6 ± 4.5 | 0.002 |
<8 cm | 29 (53.7%) | 8 (30.8%) | 0.016 | |
≥8 cm | 25 (46.3%) | 18 (69.2%) | ||
Margin | Wide | 22 (40.7%) | 10 (38.5%) | 0.809 |
Marginal | 19 (35.2%) | 8 (30.8%) | ||
Intralesional | 13 (24.3%) | 8 (30.8%) | ||
Initial Tumor Grade | I | 4 (7.4%) | 7 (26.9%) | 0.002 |
II | 38 (70.4%) | 19 (73.1%) | ||
III | 12 (22.2%) | 0 |