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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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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).
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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Ultimately MRI studies one-year later showed substantial expansion of the lesion to approximately 2.5cm (Figure 2).
Post-operative (4 months) T2 flair axial magnetic resonance image (MRI) showing absence of lesion.
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Follow-up visit at 4-months postoperatively was completely benign, with revealed absence of ganglion cyst on MRI (Figure 3).