
Keywords: En bloc resection; Morbidity; Spine tumors; Surgical planning; CC; Contaminated cases; CH; Chordoma; CHS; Chondrosarcoma; NCC; Noncontaminated cases; OGS; Osteogenic sarcoma; OR; Odds ratio; PE; Pulmonary embolism; WBB; Weinstein, Boriani, Biagini;