PMC1602186_01
Lateral X-ray of cervical spine at 6 weeks after index surgery. Persistence of pre-vertebral soft-tissue shadow, erosion and irregularity of C4 and C5 end plates apart from segmental kyphosis and loosening of screws can be seen
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Fig1
Radiographs revealed persistently enlarged pre-vertebral soft-tissue shadow, decreased disc height at C4-5 level with erosion of end-plates and segmental C4-5 kyphosis, apart from the presence of halo around the screws as shown in Fig. 1.
a Sagittal T-2 weighted MRI image showing hyperintensity signal at C4-5 disc space. Anteriorly located epidural abscess at the same level can be appreciated. b Axial T-2 weighted MRI image displaying anterior compression of the spinal cord by the epidural abscess
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Fig2
MRI revealed features of discitis at C4-5 level with associated pre-vertebral and epidural abscesses from C4 to C6 levels as well as artifacts secondary to instrumentation and cages as shown in Fig. 2a and b. 
Lateral X-ray at 5 months after the revision surgery. Solid fusion at all levels and obliteration of the pre-vertebral soft-tissue shadow can be seen
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Fig3
At the 8-month mark, he is asymptomatic and the X-rays performed after 5 months reveal solid fusion at all levels and obliteration of the pre-vertebral soft-tissue shadow as shown in Fig. 3.