We used MRI to define the invading level of the tumor, then blocked the main blood supply with angiography plus gelfoam for embolization simultaneously to reduce the amount of intraoperative bleeding.

• 我们使用核磁共振摄影来定肿瘤侵犯的程度，并使用血管摄影加上止血芳来做肿瘤供应动脉阻塞，以期降低术中流血，依肿瘤外缘切除。