PMC8422461_01
Magnetic resonance imaging scans from first clinic encounter. (a) Sagittal T1 postcontrast image, showing prepontine cystic lesion (red arrow), (b) axial T1 postcontrast image, (c) axial T2 image.
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F1
The magnetic resonance imaging (MRI) scan [Figure 1] depicted a well-circumscribed lesion along the anterior prepontine region measuring 24.8 x 14.7 x 31.5 mm, compressing the lower pons.
Magnetic resonance imaging scans from follow-up after 3 months. (a) Sagittal T1 postcontrast image showing decrease in size of cyst (red arrow), (b) axial T1 postcontrast image, (c) axial T2 image.
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F2
Magnetic resonance imaging scans from most recent follow-up. (a) Sagittal T1 postcontrast image, note the normal contour of brainstem, (b) axial T1 postcontrast image, (c) axial T2 image.
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F3
On her most recent follow-up, her MRI scan [Figure 3] showed complete resolution of the previously visualized prepontine cyst.