The tumor was remoed en bloc through the use of curettes, rongeurs, osteotomes, and a diamond burr to free circumferentially the tumor from the sacral ala and body.

• 肿物用刮匙、咬骨钳、骨凿及金刚钻等工具环周游离，从骶骨翼和骶骨体上整块切除。