PMC8720595_01
(a) CT scan, axial section at C4C5, showing hypodensity in the posterior left-sided soft tissue representing the knife track with its passage filled with air (black arrow). (b) MRI sagittal T2-weighted hyperintense signal of the spinal cord at C4C5 level sign of medullary contusion (green arrow), with the continuous posterior soft tissue hyperintense representing the knife track (yellow arrow).
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This was filled with air, and there was no apparent injury to the visceral structures of the neck (Figure 1(a)). A magnetic resonance imaging (MRI) scan of the cervical spine at the admission (about 10 hours from the assault) also showed the knife track and revealed spinal cord contusion at the C4C5 level (Figure 1(b)).