“…Consequently, there has been a shift in the pattern of relapse in these children with the emergence of metastases that involve or are isolated to the central nervous system (CNS) (1). Historically, reports of discrete neuraxis relapse (i.e., the parenchyma of the brain and spinal cord and the subarachnoid space) in children with NB have been rare and uniformly signified an ominous outcome (1)(2)(3)(4)(5)(6)(7)(8)(9). Initial attempts to treat CNS relapse with combinations of surgery, systemic chemotherapy, and/or focal radiotherapy (RT) were generally ineffective in preventing further progression of disease and ultimate death (1-3, 5, 6, 8, 9).…”