case_images: PMC10198211_01
case_images: Graph showing laboratory biochemical data from the onset of detection to date
case_images: JCVJS-14-97-g001.jpg
case_images: PMC10198211_01_JCVJS-14-97-g001.jpg
case_images: F1
case_images: The data for the months from the onset of detection of HPT to date are presented in Table 1 and Figure 1.
case_images: MRI of the cervical spine - T2WI (A: Sagittal, B: Axial, C: Coronal) showing an expansile lytic lesion involving the C2 vertebra, causing collapse with posterior impingement on the thecal sac and cord. MRI: Magnetic resonance imaging
case_images: JCVJS-14-97-g002.jpg
case_images: PMC10198211_01_JCVJS-14-97-g002.jpg
case_images: F2
case_images: MRI and CT scans of the cervical spine were repeated, which revealed an expansile lytic lesion involving the vertebral body, odontoid process, and left pedicle of the C2 vertebra and as compared to the prior study, there was a moderate interval increase in the lesion, causing collapse with posterior and left lateral subluxation, impinging on the thecal sac and cord [Figures 2 and 3].
case_images: CT of the cervical spine - (A: Sagittal, B: Axial, C: Coronal) showing an expansile lytic lesion (red arrows) involving the vertebral body, odontoid process, and left pedicle of C2 vertebra, causing collapse with posterior and left lateral subluxation; diffuse radiologic lucencies (osteopenia vs. multiple lytic lesions) in the other visualized bones including multiple vertebrae (blue arrows). CT: Computed tomography
case_images: JCVJS-14-97-g003.jpg
case_images: PMC10198211_01_JCVJS-14-97-g003.jpg
case_images: F3
case_images: MRI and CT scans of the cervical spine were repeated, which revealed an expansile lytic lesion involving the vertebral body, odontoid process, and left pedicle of the C2 vertebra and as compared to the prior study, there was a moderate interval increase in the lesion, causing collapse with posterior and left lateral subluxation, impinging on the thecal sac and cord [Figures 2 and 3].
case_images: H and E stained histopathology sections showing scanty fragments of viable and necrotic cortical bone with very scanty fragments of fascicles of spindle-shaped fibrous stromal cells with bland nuclear features and admixed few osteoclastic giant cells and foci of hemosiderin-laden macrophages and focal new bone formation; no evidence of cytologic atypia, mitosis or malignant chondroid, or osteoid; no evidence of malignancy or metastasis
case_images: JCVJS-14-97-g004.jpg
case_images: PMC10198211_01_JCVJS-14-97-g004.jpg
case_images: F4
case_images: Postoperative AP and lateral X-ray showing occipitocervical fusion with implants in situ. AP: Antero-Posterior
case_images: JCVJS-14-97-g005.jpg
case_images: PMC10198211_01_JCVJS-14-97-g005.jpg
case_images: F5
case_images: The patient improved neurologically postsurgery with good progress on follow-up [Figure 5].