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Preoperative contrast-enhanced computed tomography showing the location of the tumor. (A) 3D reconstruction (B) Sagittal (C) Axial view.
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Preoperative contrast-enhanced 3D CT revealed a bone tumor at the C2 vertebra body (Fig. 1).
Preoperative magnetic resonance image showing severe spinal cord compression from the right ventral side (A, B).
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MRI T2-weighted images showed the tumor compressed the spinal cord from the right ventral side (Fig. 2).
Intraoperative images. Intraoperative photograph showing compression of the spinal cord by the tumor (white arrow) (A). Navigation screen clearly showing the location of the tumor (B).
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The tumor was exposed easily (Fig. 3A). Using O-arm navigation, we could recognize the location of the tumor precisely (Fig. 3B). As shown in Fig. 3B, the location of the tumor was clearly seen using the O-arm.
Navigation screen. The inside part of the tumor was removed, and the remnant of the tumor was chipped down and removed (white arrow) (A).
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A third O-arm scan was performed after complete resection of the tumor (Fig. 4). In addition, we would know how much of the tumor was resected during surgery, and further strategies could be made (Fig. 4A).