PMC3205508_01
Hyperdense frontal lesion mimicking an intratumoral hemorrhage
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F1
This lesion appeared hyperdense on CT scan [Figure 1], a finding that drew the attention to a possible recent intratumoral bleeding.
T1-weighted images (contrast-enhanced) demonstrating a hyperintense left frontal lobe lesion
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F2
It was hyperintense on T1-weighted images [Figure 2] and isointense on T2-weighted images.
Gradient echo sequence: the lesion is isointense to the brain
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F3
But when analyzing the gradient echo sequence (GRE), the lesion was isointense to the brain [Figure 3].
Histopathologic findings included dense deposit of melanin, intense tumoral necrosis and nuclear atypism with surrounding secondary lesions (H and E, x300)
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F4
The histology of the lesion confirmed a metastatic melanoma of the brain [Figure 4].