PMC8586871_01
(a-d) Gadolinium-enhanced, T1-weighted MRI (a: axial, left panel; b: mid-sagittal, right panel) shows a cerebellar, partially nodular lesion at the roof of the 4th ventricle with consecutive tonsillar herniation (arrow) and beginning compression of the medulla oblongata. Postoperative MRI confirms (c: axial, d: sagittal) complete resection of the benign tumor and decompression of the foramen magnum.
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F1
As part of a further clinical diagnostic work-up, a routine magnetic resonance imaging (MRI) of the head was performed, which revealed a partially contrast enhancing space-occupying compressive lesion at the roof of the fourth ventricle, with a nodular hypervascular component [Figures 1a and b]. Postoperatively, depression and derealization almost completely resolved, and the postoperative MRI displayed complete tumor resection and decompression of the foramen magnum [Figures 1c and d].