A 62-year-old man with subacute cognitive impairment and seizures.

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Presentation transcript:

A 62-year-old man with subacute cognitive impairment and seizures. A 62-year-old man with subacute cognitive impairment and seizures. A, An enlarged and hyperintense right hippocampus in a coronal FLAIR image (arrowhead). Additional right amygdala involvement was observed, but no abnormal enhancement was documented after intravenous gadolinium administration (not shown). B, Body CT after contrast administration shows a right hilar mass (arrow) with an enlarged lower paratracheal lymph node (asterisk). Endobronchial biopsy specimen revealed an small cell lung carcinoma, and the diagnosis was consistent with PLE. A.J. da Rocha et al. AJNR Am J Neuroradiol 2015;36:2196-2205 ©2015 by American Society of Neuroradiology