PMC7395466_01
Axial computed tomography image showing exophytic lesion with peripheral cortical bone and impinging in the canal at T10 level.
SNI-11-199-g001.jpg
PMC7395466_01_SNI-11-199-g001.jpg
F1
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.
Axial T2W magnetic resonance imaging showing hypointense lesion impinging on the cord posterolaterally.
SNI-11-199-g002.jpg
PMC7395466_01_SNI-11-199-g002.jpg
F2
Further, there was a hyperintense signal on T2/STIR images within the cord itself consistent with edema [Figures 2 and 3].
Sagittal T2W magnetic resonance imaging showing hypointense lesion impinging on the cord posteriorly in parasagittal section and displacing the cord anteriorly.
SNI-11-199-g003.jpg
PMC7395466_01_SNI-11-199-g003.jpg
F3
Further, there was a hyperintense signal on T2/STIR images within the cord itself consistent with edema [Figures 2 and 3].
Intraoperative image showing cortical bone peripherally and soft core within.
SNI-11-199-g004.jpg
PMC7395466_01_SNI-11-199-g004.jpg
F4
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].
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.
SNI-11-199-g005.jpg
PMC7395466_01_SNI-11-199-g005.jpg
F5
Higher power view showing benign chondrocytes within the cartilaginous cap. H&E, x400.
SNI-11-199-g006.jpg
PMC7395466_01_SNI-11-199-g006.jpg
F6