case_images: PMC11730039_01
case_images: Brain magnetic resonance imaging. Fluid-attenuated inversion recovery images of brain magnetic resonance imaging showed high-signal areas (arrows) around the corpus callosum, lateral ventricles, and bilateral trigeminal nuclei in the bilateral pars ventralis pontis, suggesting demyelination. a Axial section, b right sagittal section, c left sagittal section
case_images: 40981_2025_764_Fig1_HTML.jpg
case_images: PMC11730039_01_40981_2025_764_Fig1_HTML.jpg
case_images: Fig1
case_images: Fluid-attenuated inversion recovery images of brain magnetic resonance imaging showed high-signal findings around the corpus callosum, lateral ventricles, and the bilateral trigeminal nuclei, suggesting demyelination (Fig. 1), which led to the diagnosis of TN due to MS.
case_images: Left Gasserian ganglion block. The needle was inserted into the foramen ovale (dotted circle) in anterior-posterior oblique view. Contrast retention within Gasserian ganglion was confirmed. The direction of the needle was confirmed in the axial image, and the needle tip was confirmed not to exceed the clivus (dashed line) in the lateral image. Solid line indicates skull base. a Anterior-posterior oblique view, b axial view, c sagittal view
case_images: 40981_2025_764_Fig2_HTML.jpg
case_images: PMC11730039_01_40981_2025_764_Fig2_HTML.jpg
case_images: Fig2
case_images: Left side Gasserian ganglion block (GGB) under fluoroscopy was performed (Fig. 2).
case_images: Right Gasserian ganglion block. The needle was inserted into the foramen ovale (dotted circle) in anterior-posterior oblique view. Contrast retention within Gasserian ganglion was confirmed. The direction of the needle was confirmed in the axial image, and the needle tip was confirmed not to exceed the clivus (dashed line) in the lateral image. Solid line indicates skull base. a Anterior-posterior oblique view, b axial view, c sagittal view
case_images: 40981_2025_764_Fig3_HTML.jpg
case_images: PMC11730039_01_40981_2025_764_Fig3_HTML.jpg
case_images: Fig3
case_images: Right side GGB was performed using the same procedure as on the left side (Fig. 3).