766 / 1708
Use of Cone Down Boost
30 patients with parameningeal
RMS
Prior to 1992, pre-chemo volume
treated to 45 – 59.4 Gy
After 1992, pre-chemo volume
treated to 30.6 – 40 Gy
followed by cone down boost
to 41.4 – 55.2 Gy
No difference in local control
between two time methods
Chen C et al. Int J Radiat Oncol Biol Phys 2003; 55:1294-99