From the Departments of Neurology (I.A.-R.), Radiology (J.N.F.), Neurosurgery (G.P.D.), Medicine (C.N.K.), and Pathology (C.W.M., K.A.L.), Massachusetts General Hospital, and the Departments of Neurology (I.A.-R.), Radiology (J.N.F.), Neurosurgery (G.P.D.), Medicine (C.N.K.), and Pathology (C.W.M., K.A.L.), Harvard Medical School — both in Boston.
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This case was presented at Neuroscience Grand Rounds.
Disclosure forms provided by the authors are available with the full text of this article at NEJM.org.
We thank Dr. Matthew Frosch for assistance with the pathology portions of the conference and case presentation.
