PMC4123262_01
Axial non-contrast CT scan reveals a relatively well-demarcated frontoparietal tumor with mixed densities, with solid and cystic areas and minimal peripheral edema, but displacement of midline structures
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F1
There was midline shift observed and collapse of the ipsilateral ventricular system as well [Figure 1].
Axial T1-weighted (a) and contrast (b) MRI demonstrates a heterogeneous well-circumscribed frontoparietal tumor with rim enhancement and enhancement of the solid and cystic areas of the tumor
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F2
T1-weighted images it was heterogeneous, but predominantly isointense to white matter [Figure 2]. The T2-weighted images revealed a multicystic hyperintense lesion with a striking "bubbly" heterogeneous pattern inside the tumor [Figure 3]. Contrast images revealed a mixed solid and peripheral rim enhancement [Figure 2].
Axial T2-weighted MRI shows a heterogeneous, predominantly hyperintense lesion with white matter, with minimal surrounding edema and "bubbly" appearance (a). Coronal T2- weighted MRI reveals a strikingly "bubbly" appearance and midline shift (b)
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F3
T1-weighted images it was heterogeneous, but predominantly isointense to white matter [Figure 2]. The T2-weighted images revealed a multicystic hyperintense lesion with a striking "bubbly" heterogeneous pattern inside the tumor [Figure 3].
Histopathologic analysis revealed a papillary neoplasm composed of mildly pleomorphic cells with a striking perivascular array of pseudorosettes (a, 10x). Also, prominent endothelial hyperplasia and hyalinized vessel walls were found (b, 4x) (hematoxylin/eosin)
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F4
A striking perivascular array of pseudorosettes was found [Figure 4].