PMC10435846_01
Sagittal and axial MRI revealed that the cauda equina was thickened, and enhanced MRI revealed that the cauda equina was significantly enhanced (at the white arrow). MRI, magnetic resonance imaging.
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Lumbosacral MRI showed abnormal thickening of the cauda equina nerve in the spinal canal at the L5-S2 level (Figure 1), and the shape and location of the masses were relatively rare.
PET/CT indicating that the cauda equina in the spinal canal is thickened. SUVmax (Standardized Uptake Value): 2.7. PET/CT, positron emission tomography/computed tomography.
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PET/CT showed that the cauda equina in the spinal canal was thickened, and multiple linear radioactive concentrations were present (Figure 2).
(A) The cauda equina nerve is surrounded by tumors, yellow-white, soft, and rich in blood supply. (B) Blunt stripping of the tumor and cauda equina nerve. (C) Sufficient hemostasis after biopsy. (D) Suture of the dura mater.
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After careful hemostasis, they were returned to the spinal processes of the vertebral lamina (Figure 3).
(A) Hematoxylin-eosin stain (x400) shows tumor cell sheet distribution, moderate atypia, eosinophilic cytoplasm, oval cells, nuclear staining, some visible nucleoli, and no clear necrosis. (B) Ki67 immunohistochemical staining (x400) shows approximately 30% positive rate. (C) NF immunohistochemical staining (x400). (D) NFD Nestin immunohistochemical staining (x400) shows a partial positive rate.
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Pathological examination showed the sheet distribution of cells, moderate atypia, eosinophilic cytoplasm, oval cells, nuclear staining, and some visible nucleoli; however, no clear necrosis was found (Figure 4).