PMC10246313_01
Incidental finding of cystic mass of the odontoid process on initial computed tomography, (a) coronal view, (b) sagittal view.
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F1
Polytrauma imaging workup revealed an incidentally discovered odontoid process cystic lesion [Figure 1] with internal fluid-fluid levels on MRI consistent with ABC [Figure 2].
T2-weighted magnetic resonance imaging demonstrating fluid-fluid levels of odontoid process cyst, highly suspicious for an aneurysmal bone cyst, (a) coronal view, (b) sagittal view.
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F2
Polytrauma imaging workup revealed an incidentally discovered odontoid process cystic lesion [Figure 1] with internal fluid-fluid levels on MRI consistent with ABC [Figure 2].
Two-month post-operative computed tomography demonstrating resolution of the cystic cavity of the odontoid process, (a) coronal view, (b) sagittal view.
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F3
There were no postoperative complications, and he was discharged the next day. 2-month postoperatively, a CT scan demonstrated a decrease in the size of the lesion with substantial new bone formation [Figure 3].
Six-month postoperative computed tomography demonstrating continued bony resolution of the cystic cavity, (a) coronal view, (b) sagittal view.
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F4
A repeat CT at 6 months showed no residual cystic lucency, formation of dense new bone, and only minimal irregularity of the cortex at the prior needle biopsy site [Figure 4].