Table 3.
Histological and immunohistochemical characteristics.
| Variables | All patients Number of patients (%) (n = 72) | SFT Number of patients (%) (n = 29) | HPC Number of patients (%) (n = 43) | P‐value | |
|---|---|---|---|---|---|
| Histological data | Collagenic areas | 55 (76.4%) | 29 (100%) | 26 (60.5%) | P = 0.0003 |
| High cellularity | 43 (59.7%) | 7 (24.2%) | 36 (83.7%) | P = 0.0001 | |
| Atypias | 33 (45.8%) | 3 (10.3%) | 30 (69.8%) | P < 0.0001 | |
| Mitoses > 5 | 21 (29.2%) | 1 (3.4%) | 20 (46.5%) | P = 0.002 | |
| Necrosis | 21 (29.2%) | 9 (31.0%) | 12 (27.9%) | P = 0.775 | |
| Vasculo‐nervous adherences | 11 (15.3%) | 9 (31.0%) | 2 (4.7%) | P = 0.005 | |
| Brain infiltration | 10 (13.9%) | 3 (10.3%) | 7 (16.3%) | P = 0.729 | |
| Immunohistochemical data | Vimentin | 72 (100%) | 29 (100%) | 43 (100%) | NS |
| EMA | 4 (5.6%) | 0 | 4 (9.3%) | P = 0.143 | |
| CD34 | 43 (59.7%) | 26 (89.7%) | 17 (39.5%) | P < 0.0001 | |
| PS100 | 0 | 0 | 0 | NS | |
| α smooth actin | 2 (2.8%) | 0 | 2 (4.7%) | P = 0.512 | |
| NCAM | 3 (4.2%) | 0 | 3 (7.0%) | P = 0.268 | |
| ER | 0 | 0 | 0 | NS | |
| PR | 25 (34.7%) | 11 (37.9%) | 14 (32.6%) | P = 0.828 | |
| MIC2 | 42 (47.2%) | 17 (58.6%) | 36 (83.7%) | P = 0.018 | |
| MIB1LI | Mean | Mean 5.35% | Mean 13.63% | ||
| Median | Median 5% | Median 10% | P = 0.001 | ||
The bold in P‐value underlines the statistically significant parameters.