PMC7242861_01
Sagittal sectioned magnetic resonance images before and after IV antimicrobial treatment for P. multocida infection. Note the discitis with epidural abscess and paravertebral inflammation at L3-L4 prior to antimicrobial treatment in (A) and significant improvement in the same region two months post-initiation with IV ceftriaxone though with persistent mild endplate edema and diminished epidural component (B).
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Follow-up MRI with and without contrast was highly suggestive of discitis and showed an epidural abscess and paravertebral inflammation at the L3-L4 level (Fig. 1A). After completion of antimicrobial therapy (~two months post-ED visit), a repeat MRI showed improvement in disc fluid at the L3-L4 level with persistent mild endplate edema and a diminished epidural component (Fig. 1B).