case_images: PMC7132051_01
case_images: Cervical spine CT-scan showing expansile bone exostosis arising from left posterior arch of C1 vertebra.
case_images: gr1.jpg
case_images: PMC7132051_01_gr1.jpg
case_images: fig0005
case_images: CT-scan and MRI showed expansile bone lesion arising from the left posterior arch of C1 and the left lamina of C2 (Fig. 1, Fig. 2, Fig. 3).
case_images: a) Cervical spine MRI showing the lesion (black arrow) on the left side, b) Cervical spine MRI showing the lesion arising from the left lamina of C2 vertebra, no other bony abnormalities noted.
case_images: gr3.jpg
case_images: PMC7132051_01_gr3.jpg
case_images: fig0015
case_images: CT-scan and MRI showed expansile bone lesion arising from the left posterior arch of C1 and the left lamina of C2 (Fig. 1, Fig. 2, Fig. 3).
case_images: The photographs of the excised lesion taken postoperatively: the posterior arch of C1 verterba, a) ventral, b) dorsal side, and lamina of C2 vertebra, c) lateral, d) medial side. The red circle marks the lesion.
case_images: gr4.jpg
case_images: PMC7132051_01_gr4.jpg
case_images: fig0020
case_images: The lesion excised is depicted in Fig. 4.
case_images: Cervical spine MRI nine months after the operation, there was no sign of recurrence.
case_images: gr5.jpg
case_images: PMC7132051_01_gr5.jpg
case_images: fig0025
case_images: Radiologic follow-up by MRI after six months showed no sign of recurrence (Fig. 5).