PMC9610042_01
(a, b, c) Sagittal T1W MRI shows a lesion extending from C7 to T2 with an hyperintense anterior component and a posterior CSF-isointense area; d, e, f) axial T1W MRI shows the right anterolateral extra-axial cystic lesion determining left posterolateral shift of the spinal cord; g, h, i) axial GRE-T2W sequences detect fluid-fluid level: an hypointense line divides two components of different intensity; j, k, l) axial T2W sequences show fluid-fluid level with anterior hyperintense and posterior hypointense components ; m, n, o) in Sagittal T2W-Flair sequences the anterior component results CSF-isointense and the posterior one is hyperintense.
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F1
Further, the GRE-T2W sequences revealed a fluid-fluid level, namely, an hypointense line dividing the different components and identifying the presence of hemosiderin, and the lesion did not enhance with contrast [Figure 1].
Spinal cord appeared dorsally displaced (a). On the right side, just below dentate ligament, a cystic formation was opened, revealing a citrine fluid (b) below, a second lesion was detected, showing signs of recent bleeding (c). The lesion was coagulated (d) and removed en block (e). (f) If shows the surgical field after lesions removal.
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F2
On the right side, just below dentate ligament, a cystic lesion was found and opened; a second contiguous lesion was detected showing signs of recent bleeding and was removed en block [Figure 2].
3-month follow-up magnetic resonance imaging of cervical spine showed no residual lesion. a) sagittal plane; b) axial plane.
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F3
The follow-up cervical MR revealed no residual lesion [Figure 3].
(a, b, c) Histopathological images of lesion specimens stained with hematoxylin and eosin (x20).
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