PMC4386143_01
Brain MRI with and without gadolinium images at diagnosis. a T1 without contrast. b T1 with contrast, c FLAIR.
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F1
MRI analysis revealed a 5.6 x 8 x 5 cm complex cystic lesion in the left frontoparietal lobe, with a mass effect on the left lateral ventricle (fig. 1).
Pathology images staining patterns. a HE. x20. b Glial fibrillary acidic protein. x20. c HE. x40. d Epithelial membrane antigen. x40.
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F2
Pathological analysis revealed brain tissue infiltrated by well-differentiated piloid cells with low-to-moderate cellularity (fig. 2).