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(A) C-spine MR sagittal image shows C5/6 central herniated disc with two intradural extramedullary masses, which are hypointense on both T1WI and T2WI, and surrounded with CSF, assuming a halo feature around the disc fragment. Most neoplasms often tightly attach either to the dura or the spinal cord, and fill the subarachnoid space between them with CSF, making the Halo a strong indicator for. IDH. Two fragments on the sagittal image represent the crumble disc sign. (B) Schematic diagram for 1A (C) Axial cut in Fig. 1A (dash line), revealing that masses compress the cord on the right side (D) Schematic diagram for 1C.
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Magnetic resonance imaging (MRI) of the cervical spine disclosed a centrally situated intradural lesion at C5/6, hypointense on both T1WI and T2WI sequences, and surrounded by the cerebrospinal fluid (CSF) (Fig. 1), causing right-sided cord compression.
(A) IDH was visualized under a microscopic view via the posterior approach. (B) Two.
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After a laminectomy and durotomy of C4/5/6 was performed, two 10 x 5 x 3 mm ruptured discs (Fig. 2B) were removed from the right posterior lateral aspect through the aid of a surgical microscope.
(A) The dural defect (arrow head) was visualized on the right side of C5/6. (B). Longitudinal dural defect with a protruding arachnoid membrane (arrow head) without CSF leakage and severe adhesion between PLL and dura at C5/6 found after anterior discectomy.
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Through the microscope we detected a dural defect on the right side of C5-6 (Fig. 3A). Following discectomy, we detected under the microscope a small longitudinal defect at both the posterior longitudinal ligament (PLL) and dura (Fig. 3B), while the arachnoid membrane intact and without CSF leakage.