Table 1.

Clinicopathological features of 89 patients with conventional spinal chordomas.

Parameters	All Samples (n = 89)
Gender (N, %)
Male	51 (57.3%)
Female	38 (42.7%)
Age (median, range in years)	61 (17–86)
Age (N, %)
≤60 years	42 (47.2%)
>60 years	47 (52.8%)
Tumor size (N, %)
<5 cm	36 (40.4%)
≥5 cm	39 (43.9%)
Not available	14 (15.7%)
Tumor localization
Cervical–thoracic–lumbar region	43 (48.3%)
Sacrococcygeal region	46 (51.7%)
Surgical margin
Adequate	45 (50.6%)
Inadequate	25 (28.1%)
Not available	19 (21.3%)
Ki-67 index (median, range)	3 (1–12)
Ki-67 index (N, %)
≤3%	43 (48.3%)
>3%	37 (41.6%)
Not evaluable	9 (10.1%)
SMARCB1/INI1 immunohistochemical expression (N, %)
Positive	52 (58.4%)
Positive/negative	37 (41.6%)
Previous surgery
No	53 (59.6%)
Yes	21 (23.6%)
Not available	15 (16.9%)
Previous treatment
No	59 (66.3%)
Yes	14 (15.7%)
Not available	16 (18%)
Type of surgery
En bloc resection	54 (60.7%)
Other surgery	16 (18%)
No surgery	19 (21.3%)
Charlson Comorbidity Index (CCI)
Mean (SD)	4.1 (0.260)