Figure 2.

Comparison of (A) a baseline CyberKnife treatment plan and (B) the most recent radiographic follow-up evaluation of an 11-year-old male patient with a cervicomedullary recurrent medulloblastoma status post-surgical resection and adjuvant radiation therapy. A marginal dose of 18 Gy was delivered with the maximum dose of 24.16 Gy in a single fraction to 75% of the isodose line (A) A substantial reduction in tumor size was evident in the 41-month follow-up MRI (B). The arrows indicate the location of the tumor at treatment initiation and its disappearance at the latest follow-up, highlighting key information central to this figure and the manuscript.