PMC8088533_01
(a) Sagittal T2-weighted magnetic resonance image (MRI) on admission showing mild hyperintensity on the dorsal side of the epidural lining at T8-11. (b) Coronal computed tomography image showing sinusoidal abscess. (c) Sagittal T2-weighted MRI on day 14 showing almost complete resolution of the epidural abscess.
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F1
T2-weighted images of contrast-enhanced MRI revealed a mild hyperintense space-occupying lesion with a ring-shaped contrast effect located epidurally on the dorsal side of the T8-11 level [Figure 1a] and an epidural abscess was diagnosed. Pharyngeal bacterial tests revealed Streptococcus aureus, and a sinusoidal abscess with tonsillitis was noted on sinus computed tomography [Figure 1b]. MRI at 1.5 months and 5 months posttreatment showed no recurrence with no neurological symptoms [Figure 1c].
PMC8088533_02
(a) Sagittal T2-weighted MRIs on admission showing L5/S1 high-intensity lesion of the intervertebral disc and abscess in the spinal canal. (b) Axial T2-weighted MRIs on admission showing L5/S1 high-intensity lesion of the intervertebral disc and abscess in the spinal canal. (c) Tyloma on sole of foot, suspected to be the source of infection. (d) Sagittal T2-weighted MRIs showing complete disappearance of the mass and the intensity change of the intervertebral disc. (e) Axial T2-weighted MRIs showing complete disappearance of the mass and the intensity change of the intervertebral disc.
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F2
MRI revealed a multilocular epidural mass contiguous with the L5/S1 intervertebral disc showing low intensity on T1-weighted image and high intensity on T2-weighted image [Figure 2a and b]. A whole-body examination revealed a tyloma on the sole of the foot [Figure 2c], which was suspected to be the source of the infection. No recurrence was seen until 9 months after the initial onset, the last observation point [Figure 2d and e].