case_images: PMC10847289_01
case_images: (A) Sagittal T1-weighted MRI performed at 1 month after the onset of headaches showing 5 mm prolapse of the cerebellar tonsils (arrow) into the foramen magnum (dashed line). (B) Sagittal T2-weighted MRI showed a crowded spinal canal. (C) Intrathecal gadolinium-enhanced MR myelography showed CSF leakage in the cervico-thoracic junction. (D) MR myelography indicated that the CSF leakage site was located in the cervico-thoracic junction. (E) Sagittal T1-weighted MRI performed at 2 months after targeted EBP intervention showed that re-ascent of the cerebellar tonsils above the foramen magnum (dashed line). Scale bar: 1 cm.
case_images: fneur-15-1309718-g001.jpg
case_images: PMC10847289_01_fneur-15-1309718-g001.jpg
case_images: fig1
case_images: Initial cranial MRI showed the descent of cerebellar tonsils below the foramen magnum is 5 mm (Figure 1A). Sagittal image of T2-weighted MRI showed the spinal canal is crowded (Figure 1B). Intrathecal gadolinium-enhanced MR myelography demonstrated that spinal CSF leakages (Figure 1C) were observed in the cervico-thoracic junction. Also, spinal MR myelography (Figure 1D) demonstrated that CSF leakage sites were located in the cervico-thoracic junction. MRI showed that the cerebellar tonsil was located in the anatomical position above the foramen magnum 2 months later (Figure 1E).