PMC4300874_01
Five hours after ESI in a 47-year-old man, magnetic resonance imaging scans performed at the emergency department were unremarkable, showing a normal appearing conus. (A) T2-weighted sagittal image (repetition time, 3516.7; echo time, 112.0). (B) T1-weighted sagittal image (repetition time, 416.7; echo time, 15.0).
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F0001
Although the initial magnetic resonance imaging (MRI) study performed in the emergency department was unremarkable (Fig. 1), a later neurosurgical evaluation showed conus medullaris syndrome.
Magnetic resonance images (about 48 hours after the procedure) showing extensive signal abnormalities within the lower thoracic spinal cord and conus compatible with the clinical diagnosis of conus infarct. (A) T1-weighted sagittal image (repetition time, 675.0; echo time, 9.6). (B) T2-weighted sagittal image (repetition time, 3640.0; echo time, 102.0). (C) Short tau inversion recovery (STIR) sagittal image (repetition time, 4000.0; echo time, 58.0).
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However, a second MRI study to evaluate the possibility of vascular complications obtained 48 hours after the injection showed a conus infarct (Fig. 2).