PMC6744754_01
Preoperative magnetic resonance images (MRI). (a) Sagittal T1 sequence with gadolinium contrast showing an intramedullary lesion at D9-D10 level with homogeneous enhacement and several small dorsal implants. (b) Sagittal T1 sequence with contrast where there is no evidence of residual lesion in filum terminale of the first surgery. (c) Sagittal T2 sequence showing an intramedullary isointense lesion in D9-D10 level with hemosiderin focus. (d) Axial T1 Axial MRI T1 with gadolinium contrast at D9 level where the lesion involves the whole spinal cord.
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F1
MR studies of the brain and cervical spine showed no abnormality [Figures 1 and 2].
Smears of the specimen showed a papillary pattern with myxoid background (a, H and E, x200) and presence of globules of myxoid substance (b, H and E, x200). The paraffin sections reflexed these findings, with a microcystic myxoid background (c, H and E, x200) and intense glial fibrillary acidic protein (GFAP) expression (d, GFAP, x200).
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F2
MR studies of the brain and cervical spine showed no abnormality [Figures 1 and 2].
Postoperative magnetic resonance images. (a and b) Sagittal T1 sequence with gadolinium contrast and T2 sequence showing residual solid lesion in the lower portion of the tumor. Surgery was early terminated by the intraoperative decrease of the evoked potentials.
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F3
We performed a subtotal resection of the solid component because the patient presented a decrease of motor evoked potentials during tumor resection [Figure 3].