Multiple large dilated Virchow-Robin spaces in a 12-year-old with neurofibromatosis type 2.


This 12-year-old previously healthy boy initially presented with left leg pain. Magnetic resonance imaging (MRI) showed multiple masses in the spinal canal and bilateral vestibular schwannomas (Figure A). He also had scattered subcutaneous masses, which were likely neurofibromas or schwannomas. He was diagnosed with neurofibromatosis type 2 (NF2). His parents were healthy, and there was no family history of NF2 or other major diseases. Cranial MRI showed numerous well-defined cyst-like lesions located mainly in the convexity of the right frontal lobe, some with a diameter up to 9.0 mm (Figure B). Signal intensity of the cystic lesions was identical to that of cerebrospinal fluid. These cysts exhibited typical vascular shape in sagittal MRI scans; they were compatible with dilated


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