PMC8247717_01
T2-weighted image on magnetic resonance imaging (a) is the preoperational image, which revealed cerebellar tonsil herniation and syringomyelia. (b) Syringomyelia was improved after the foreman magnum and C-1 decompression on image.
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F1
The cervical magnetic resonance (MR) showed a CM1 (i.e. 7 mm herniation of the cerebellar tonsils of below the foramen magnum), a C2-T5 syrinx, while the brain MR documented a pituitary adenoma [Figures 1-3].
The axial image on computed tomography (CT) (a) showed that the transverse foramen magnum diameter was smaller than the anteroposterior diameter. The sagittal image on CT (b) showed the sagittal area on the midline posterior fossa.
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F2
The cervical magnetic resonance (MR) showed a CM1 (i.e. 7 mm herniation of the cerebellar tonsils of below the foramen magnum), a C2-T5 syrinx, while the brain MR documented a pituitary adenoma [Figures 1-3].
(a & b) T1-weighted image on magnetic resonance imaging showed pituitary adenoma.
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F3
The cervical magnetic resonance (MR) showed a CM1 (i.e. 7 mm herniation of the cerebellar tonsils of below the foramen magnum), a C2-T5 syrinx, while the brain MR documented a pituitary adenoma [Figures 1-3].