PMC3424676_01
Precontrast axial CT scan showing a left frontal lobe lesion with surrounding edema (a), Postoperative precontrast axial CT scan status after left frontoparietal craniotomy showing a residual area of hypodensity in the operative bed caused largely by edema (b)
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F1
Initial imaging by the emergency room, noncontrast enhancing computed tomography (CT) of the brain, revealed an isodense lesion of the left frontal lobe with associated vasogenic edema [Figure 1].
Precontrast axial T1-weighted MRI (a), postcontrast axial T1-weighted MRI (b), precontrast sagittal T1-weighted MRI (c), postcontrast sagittal T1-weighted MRI (d), coronal T1-weighted MRI (e), axial T2-weighted MRI (f), axial FLAIR image showing a solitary lesion with surrounding edema (g)
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F2
Magnetic resonance imaging (MRI) of the brain showed a 3.1 x 3.1 x 2.7 cm heterogeneously enhancing mass located along the posterior aspect of the left frontal convexity [Figure 2].
Groups of poorly differentiated papillary urothelial carcinoma cells invading into brain parenchyma. (a): x100, (b): x400
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F3
The final pathological diagnosis of our left parietal brain tumor biopsy was metastatic carcinoma with features of TCC [Figure 3].
Postoperative precontrast axial T1-weighted MRI (a), Axial T2-weighted MRI (b), Sagittal T1-weighted MRI (c), Coronal T1- weighted MRI status after left frontoparietal craniotomy showing no significant complicating factors (d)
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F4
No significant complicating factors were noted on postoperative MRI scan [Figure 4].