“…Due to the immunosuppressed status of the patients and the non-specific MRI findings, a thorough evaluation of vascular, infectious, and other neoplastic etiologies such as cerebral abscess, posterior reversable encephalopathy syndrome (PRES), stroke, cerebral venous sinus thrombosis, demyelination, infectious encephalitis, autoimmune encephalitis, glioblastoma, and metastatic disease must be undertaken by treating physicians [ 11 ]. A summary of relevant testing is highlighted in Table 2 .…”