PMC4707768_01
Sagittal T2-weighted MRI. The MRI of the Cranial-cervical structures showing the dorsal increase of the odontoid dens
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PMC4707768_01_12891_2015_847_Fig1_HTML.jpg
Fig1
A cranial-cervical spine MRI revealed a "basilar impression" in the sagittal T2-weighted image and demonstrated a slight dorsal increase of the odontoid dens with a cranio-dorsal sagittal shift of approximately 6 mm with associated footprint of the anterior surface of the bulbospinal tract (yellow arrow in Figs. 1 and 2). A moderate disc protrusion at C3-C4 and at C4-C5 and C5-C6, without spinal cord compression, were also visualized (Fig. 1). A coronal T2-weighted image demonstrated a cranial-cervical malformation with a subtotal fusion of the atlas with the occipital bone and a hypertrophic right articular process of the dens of the axis (yellow arrow in Figs. 1 and 2) resulting in an asymmetrical position of the facet joints (Fig. 2).
Coronal T2-weighted MRI. The MRI showing the cranial-cervical malformation with a subtotal fusion of the atlas with the occipital bone
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PMC4707768_01_12891_2015_847_Fig2_HTML.jpg
Fig2
A cranial-cervical spine MRI revealed a "basilar impression" in the sagittal T2-weighted image and demonstrated a slight dorsal increase of the odontoid dens with a cranio-dorsal sagittal shift of approximately 6 mm with associated footprint of the anterior surface of the bulbospinal tract (yellow arrow in Figs. 1 and 2). A coronal T2-weighted image demonstrated a cranial-cervical malformation with a subtotal fusion of the atlas with the occipital bone and a hypertrophic right articular process of the dens of the axis (yellow arrow in Figs. 1 and 2) resulting in an asymmetrical position of the facet joints (Fig. 2).