PMC10064384_01
a Sagittal head CT showing intraosseous cystic lesion completely hidden in the nasal bone. b T1-weighted brain magnetic resonance imaging showed hyperintense cystic contents. c Short tau inversion recovery sequence demonstrated fat-suppressed signals in the corresponding area. d Post-operative head CT demonstrating replaced nasal bone (arrowhead) and particulate corticocancellous bone (dashed arrow) reconstructing the skull base defect.
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F1
On review, the head CT demonstrated an intraosseous cystic lesion completely hidden in the nasal bone (Fig. 1a). The lesion was consistent with dermoid cyst on MRI (Fig. 1b, c). The nasal bones were then replaced (Fig. 1d).