Primary clear cell sarcoma of soft tissue in the posterior cervical spine invading the medulla oblongata: A case report

Figure 1 Computed tomography angiography images showing a posterior cervical soft tissue mass. A: Plain scanning (axial view) showed a left paravertebral soft tissue mass at 1-2 levels in the neck, with clear boundaries; B: Enhanced scanning (coronal view) showed a mass protruding into the spinal canal of the cranio-cervical junction through the foramen magnum; C: Enhanced scanning (sagittal view) showed that the supplying artery was tortuous.