case_images: PMC10858783_01
case_images: (a) Sagittal angio-CT scan indicate the presence of a tumor (arrow) at the level of the C4-5 right pedicle and articular facet. (b) The inhomogeneous matrix ossification is presented in the tumor (arrow). (c) Gadolinium-enhanced axial MRI depicted a well-demarcated tumor (arrow) and edema of the paravertebral soft tissue.
case_images: SNI-15-20-g001.jpg
case_images: PMC10858783_01_SNI-15-20-g001.jpg
case_images: F1
case_images: Gadolinium-enhanced magnetic resonance imaging (MRI) demonstrated a contrast-enhancing mass with ossification signals in the central and outer matrix [Figure 1].
case_images: (a) Post-operative sagittal T2-weighted MRI depicting a hypointense mass lesion (arrow). (b) Axial T2-weighted MRI scan showing compression of the right C5 nerve root trace by the hypointense mass (arrow). (c) Post-operative sagittal T1-weighted MRI showing vertebral artery (arrow) trace.
case_images: SNI-15-20-g002.jpg
case_images: PMC10858783_01_SNI-15-20-g002.jpg
case_images: F2
case_images: Imaging studies revealed no damage to the vertebral artery but identified a mass within the excised tumor bed compressing the C5 nerve root, displaying hypointensity on T2-weighted MRIs [Figure 2].
case_images: (a) Expansile tumor surrounded by a sclerotic rim, showing a spectrum of bone maturation changes (H&E, x40). (b) Neoplasia with diffusely distributed osteoclast-type multinucleated giant cells with extravasated erythrocytes (H&E, x100). (c) Bone trabeculae are covered by a single layer of osteoblasts (H&E, x200). (d) Benign bone tumor with degenerative cytological atypia characterized by cells with large degenerated nuclei and smudged chromatin (H&E, x400).
case_images: SNI-15-20-g003.jpg
case_images: PMC10858783_01_SNI-15-20-g003.jpg
case_images: F3
case_images: Pathological examination of the surgical specimen confirmed the presence of osteoblastoma [Figure 3].