case_images: PMC7395466_01
case_images: Axial computed tomography image showing exophytic lesion with peripheral cortical bone and impinging in the canal at T10 level.
case_images: SNI-11-199-g001.jpg
case_images: PMC7395466_01_SNI-11-199-g001.jpg
case_images: F1
case_images: The cortex and medullary portions of the lesion were continuous with the T10 vertebral body (i.e., exostosis) [Figure 1]. The MR T1- and T2-weighted images revealed a hypointense lesion occupying the left posterolateral spinal canal at the T10 level with accompanying posterior cord compression.
case_images: Axial T2W magnetic resonance imaging showing hypointense lesion impinging on the cord posterolaterally.
case_images: SNI-11-199-g002.jpg
case_images: PMC7395466_01_SNI-11-199-g002.jpg
case_images: F2
case_images: Further, there was a hyperintense signal on T2/STIR images within the cord itself consistent with edema [Figures 2 and 3].
case_images: Sagittal T2W magnetic resonance imaging showing hypointense lesion impinging on the cord posteriorly in parasagittal section and displacing the cord anteriorly.
case_images: SNI-11-199-g003.jpg
case_images: PMC7395466_01_SNI-11-199-g003.jpg
case_images: F3
case_images: Further, there was a hyperintense signal on T2/STIR images within the cord itself consistent with edema [Figures 2 and 3].
case_images: Intraoperative image showing cortical bone peripherally and soft core within.
case_images: SNI-11-199-g004.jpg
case_images: PMC7395466_01_SNI-11-199-g004.jpg
case_images: F4
case_images: Surgery consisted of a bilateral T10 laminectomy for en bloc resection of the lesion, a predominantly bony mass originating from the left lamina of T10 that was (e.g., continuous with the inner surface of the T10 lamina on the left) [Figure 4].
case_images: Cartilaginous cap covered with perichondrium. The cartilage is showing enchondral ossification, continuous with the bony trabeculae seen toward the right side of the image. H&E, x100.
case_images: SNI-11-199-g005.jpg
case_images: PMC7395466_01_SNI-11-199-g005.jpg
case_images: F5
case_images: Higher power view showing benign chondrocytes within the cartilaginous cap. H&E, x400.
case_images: SNI-11-199-g006.jpg
case_images: PMC7395466_01_SNI-11-199-g006.jpg
case_images: F6