PMC3843927_01
Patient 1. Neuroimaging at diagnosis and follow-up. On admission, CT (a), T2-weighted (b) and gadolinium-enhanced T1-weighted (c) axial MR images showed an early, subacute, frontal hematoma with a different wall thickness (arrows) of uncertain nature as well as a vasogenic edema. Two months later, T2-weighted (d) and gadolinium-enhanced T1-weighted (e) MR axial images showed only a slight reduction of the hematoma, an increase of the vasogenic edema and a clearcut evidence of gadolinium-enhanced pathologic solid tissue (arrowheads) consistent with GBM.
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F1
He was admitted to another institution before he came to our institution, from which he was discharged with a clinical and neuroimaging diagnosis of hemorrhagic stroke (fig. 1a-c). In April 2012, a brain MRI showed resorption of the bleeding and clear evidence of a large, right parietal, extra-axial mass (fig. 1d, e).
PMC3843927_02
Patient 2. MR images of the brain on admission. Serial consecutive fat-suppressed fluid-attenuated inversion recovery (a) and gadolinium-enhanced T1-weighted (b) axial images showed an inhomogeneous, irregularly contrast-enhancing mass lesion (arrows) in the right paratrigonal region associated with a marked vasogenic edema, resulting in a mass effect. Also note the sellar and suprasellar macroadenoma (white arrowheads), which is shown better on the gadolinium-enhanced T1-weighted sagittal image (c), and a left frontal meningioma (black arrowhead).
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F2
A brain MRI (fig. 2) showed a large, inhomogeneous, irregularly gadolinium-enhancing, right, paratrigonal, intra-axial mass.