Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleProgressive Neurological Impairment and an Enhancing Brainstem Lesion in a Middle-aged Man.AuthorsGupta, Sasha; Damon, Lloyd; Gelfand, Jeffrey M.AbstractA 53-year-man presented with numbness in his right arm and difficulty walking, and a computed tomographic scan showed infiltrative soft tissue within the pericardium and intra-atrial septum and throughout the retroperitoneum. What is your diagnosis?PublicationJAMA Neurology, 2019, Vol 76, Issue 11, p1397ISSN2168-6149Publication typeArticleDOI10.1001/jamaneurol.2019.3002