Efficacy of Angiographic Embolization vs Non-embolization of Moderate/Poor Vascularized Vertebral Metastases on Intraoperative Bleeding During Surgery Decompression and Vertebral Stabilization.

This study examines whether performing a procedure called angiographic embolization before surgery can reduce bleeding during operations to decompress and stabilize the spine in patients with vertebral (spine) metastases — cancer that has spread to the spine. Embolization involves temporarily blocking blood supply to a tumor to reduce bleeding risk during surgery. The study focuses on tumors with moderate blood supply (grade 2 vascularization), comparing embolization against no embolization. Patients with spine metastases often need surgery to relieve spinal cord compression and stabilize the spine, but these surgeries can involve significant blood loss. This study aims to determine if pre-surgical embolization reduces that risk and improves outcomes. You may be eligible if: - You are between 18 and 75 years old - You have spine metastases with moderate vascularization (grade 2) - Your life expectancy is more than 6 months (Tokuhashi score ≤ 11) - Your surgery can be scheduled 48-72 hours after embolization You may NOT be eligible if: - You have blood clotting disorders or low platelet counts (PLT < 80,000) - You have kidney failure (creatinine ≥ 1.2) - You are allergic to contrast dye used in imaging - You are pregnant or breastfeeding - You have chronic ischemic heart disease - Emergency surgery is needed immediately - More than 72 hours have passed since embolization Talk to your doctor to see if this trial is right for you.