case_images: PMC3190429_01
case_images: CT scan axial section showing the posterior arch defect
case_images: JCVJS-2-38-g001.jpg
case_images: PMC3190429_01_JCVJS-2-38-g001.jpg
case_images: F1
case_images: High-resolution thin-section computed tomography of the CV junction revealed a fusion defect of atlas posterior arch in the center with a faint bony bar in the canal [Figures 1 and 2].
case_images: Reconstructed CT scan showing the compressing element
case_images: JCVJS-2-38-g002.jpg
case_images: PMC3190429_01_JCVJS-2-38-g002.jpg
case_images: F2
case_images: High-resolution thin-section computed tomography of the CV junction revealed a fusion defect of atlas posterior arch in the center with a faint bony bar in the canal [Figures 1 and 2].
case_images: MRI sagittal section showing severe constriction
case_images: JCVJS-2-38-g003.jpg
case_images: PMC3190429_01_JCVJS-2-38-g003.jpg
case_images: F3
case_images: Magnetic resonance imaging showed a posteriorly compressing atlas stenosis with a syringomyelia extending from medulla to C5 vertebra level [Figure 3].