PMC8240129_01
Evolvement of imaging finding. T2-weighted (A, C, D and F) and T1-weighted contrast- enhanced (E) magnetic resonance images and CT-image (B). (A and B) Day 1: calcified Th8-9 disc herniation without cord abnormalities; (C) Day 2 (post-surgery): multiple hyperintense intramedullary lesions; (D) Day 11: T2 hyperintense lesion in the posterior cord (E) that shows partial contrast enhancement; (F) 3 Months: cord abnormalities have decreased.
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Th8-9disc herniation which slightly indented the anterior cord without cord abnormalities (Figure 1). The paresis progressed to grade 1 of the left leg and grade 2 of the right leg within two hours. Repeat MRI performed the day after surgery demonstrated multiple hyperintense intramedullary lesions (Figure 1). Repeat MRI 10 days after symptom onset revealed a clearly demarcated T2 hyperintense lesion in the posterior cord extending from the fifth to the tenth thoracic vertebrae, with partial contrast enhancement (Figure 1). MRI showed a marked decrease in cord abnormalities, and contrast enhancement was no longer present (Figure 1).