paediatrics Brussels 17

UMBRELLA Study – RT Doses

• Flank 1.8 Gy x 8 fractions – 14.4 Gy (as before) • 10.8 Gy boost to residual disease (as before) • No nodal boost for N+ (departure from SIOP 2001) • Whole abdominal RT for major preoperative or intraoperative tumour rupture, or macroscopic peritoneal deposits • WLRT – 12 Gy in 8 fractions (corrected) • Gradient < 3Gy across vertebral bodies