A 31-Year-Old Man With a Ring-Enhancing Brain Lesion

Claire S Riley¹, Lisa A Roth, Jacinda B Sampson+4

• ¹Department of Neurology (CSR), Columbia University Medical Center, New York, New York; Department of Pediatrics (LAR), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Neurology and Neurological Sciences (JBS), Stanford University Medical Center, Palo Alto, California; Department of Medicine (JR), Columbia University Medical Center, New York, New York; Department of Anatomic Pathology (LCH), Cleveland Clinic, Cleveland, Ohio; Department of Radiology (AMB), Johns Hopkins University School of Medicine, Baltimore, Maryland; and Department of Ophthalmology (GM), Columbia University Medical Center, New York, New York.