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Fig 3. Baseline postcontrast fat-saturated axial T1-weighted imaging (A) demonstrates a paraspinal phlegmon (arrow). Despite clinical improvement, follow-up postcontrast T1-weighted images demonstrate apparent worsening. The paraspinal phlegmon has increased in size (arrow) and now has a small nonenhancing component suggestive of early abscess formation. There is also increased enhancement in the disk space.
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