PMC6130151_01
Brain magnetic resonance imaging showing a polylobate lesion in the left occipital lobe isohypointense on (a) axial T2-weighted images and (b) fluid attenuation inversion recovery sequences. Perilesional edema is evident with compression of the occipital horn of the lateral ventricle and mass effect. On (c) T1-weighted sequences after gadolinium administration, the tumor showed a dishomogeneous contrast enhancement
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F1
Due to the onset of the right hemiparesis, the patient was submitted to brain magnetic resonance imaging, which showed a large left occipital mass with contrast enhancement and perilesional edema [Figure 1].
Histopathological examination revealed a metastasis of a poorly differentiated carcinoma composed of nests of cell with hyperchromic and irregular nuclei (a and b). The tumor showed strong immunoreactivity for pan-cytokeratins (AE1/AE3) and focal positivity for CK5/6 and p40, showing areas of squamous differentiation (c and d)
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F2
A diagnosis of a brain metastasis from laryngeal SCC was made [Figure 2].