case_images: PMC6968678_01
case_images: Axial T2 weighted magnetic resonance image (MRI) demonstrating lesion in the left hypoglossal foramen being T2 hyperintense with no gadolinium contrast enhancement.
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case_images: PMC6968678_01_ICRP_A_1599288_F0001_B.jpg
case_images: F0001
case_images: Follow-up imaging several years later clearly demonstrated a progressively enlarging lesion in the left hypoglossal foramen being T2 hyperintense with no gadolinium contrast enhancement (Figure 1).
case_images: Follow-up T2 weighted 3D magnetic resonance image (MRI) 12 months after initial presentation demonstrating compression at the level of the brainstem.
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case_images: PMC6968678_01_ICRP_A_1599288_F0002_C.jpg
case_images: F0002
case_images: Ultimately MRI studies one-year later showed substantial expansion of the lesion to approximately 2.5cm (Figure 2).
case_images: Post-operative (4 months) T2 flair axial magnetic resonance image (MRI) showing absence of lesion.
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case_images: PMC6968678_01_ICRP_A_1599288_F0003_B.jpg
case_images: F0003
case_images: Follow-up visit at 4-months postoperatively was completely benign, with revealed absence of ganglion cyst on MRI (Figure 3).