Figure MRIs and histopathology of the biopsy specimens

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Figure MRIs and histopathology of the biopsy specimens MRIs and histopathology of the biopsy specimens Sagittal (A), axial (B), and coronal (C) gadolinium-enhanced T1-weighted MRIs demonstrate extensive enhancing extra-axial masses in the bilateral ependymal/subependymal zones and suprasellar region, with perilesional edema and severe obstructive hydrocephalus. Hematoxylin & eosin–stained (D) specimen shows a dense proliferation of mixed inflammatory cells. Small lymphocytes predominate, but scattered large histiocytes and plasma cells are also observed. Histiocytic cells showing CD68 (E) and S-100 (F) immunoreactivity. Magnification 400× (D–F). Han Chen et al. Neurol Neuroimmunol Neuroinflamm 2016;3:e293 © 2016 American Academy of Neurology