Migrating spinal intradural schwannoma with adjacent disc herniation: A case report and brief literature review

BACKGROUND: Schwannoma is the most common migrating tumor in the intradural space. CASE DESCRIPTION: We present a patient with migrating schwannoma of the cauda which admitted with buttock and thigh pain since 2 years ago. On two preoperative lumbosacral magnetic resonance imaging (MRI), he had a L2/3 disc herniation concomitant with the intradural extra-axial mass at level of the L1/2 disc on the first MRI and then on the second one, his mass was just posterior to the L3 vertebral body, 22 months later. During the surgical resection of the mass, we found it just posterior to the L2 body. In the literature, we found no accompaniment of migrating intradural spinal mass with adjacent intervertebral disc herniation caused by a double-level cerebro-spinal fluid (CSF) blockade, as it was with our case. On serial imaging, we have seen the mass above and then below the level of CSF blockade, resulting from an extra-dural disc herniation. CONCLUSION: We think this rare case could promote a better understanding of the dynamic nature of the central nervous system and the peripheral nervous system within intradural space.