PMC5844233_01
Preoperative MRI sagittal section, T2W (left picture), T1W (right picture) show localized collection of pus in the canal at the level of L3-4 with compression on the dural sac.
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F1
Also, there were multiple pockets of pus in the paraspinal muscles (Figures 1-3).  
Preoperative MRI, axial section T2W  at the level of L3 & L4 show canal compression on dural by pus collection.
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F2
Also, there were multiple pockets of pus in the paraspinal muscles (Figures 1-3).  
Preoperative MRI, axial section T2W, show multiple pockets of pus in the paraspinal muscles.
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F3
Also, there were multiple pockets of pus in the paraspinal muscles (Figures 1-3).  
Two-month follow-up MRI showing complete abscess resolution and neural decompression but low signal of L5 in T1 (a) and high signal inT2 (b) indicating L5 spondylitis.
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F4
A follow-up MRI at two months of index surgery showed complete abscess resolution with good decompression of the cauda equina region (Figure 4).