Table 1.

Patient Clinical Data.

	N (%)
Anatomic Site of Origin
Skull Base	9 (45%)
Spine	3 (15%)
Sacral/Coccygeal	8 (40%)
Disease Stage
Primary	9 (45%)
Advanced	9 (45%)
Recurrent	2 (10%)
Extent of Resection
Gross Total/Near Gross Total	13 (65%)
Partial	1 (5%)
Unavailable	6 (30%)
Therapeutic Regimen
Pre- or postoperative radiotherapy	11 (55%)
Chemotherapy	0 (0%)

Clinical data of patients diagnosed with chordoma included in the study (n = 20). Data is shown as n(%).