EBRO 2017

Recent comments on RTOG atlases (& probably also valid for ESTRO atlas):

• In case of massive involvement supraclavicular nodes: nodes extend beyond CTVn_L4  should atlas be adapted ? ( Brown et al, IJRBOP 2015; Jing et al IJRBOP 2015) • To cover 95% of lymph nodes at cranial and anterior borders of level 1, CTVn_L1 should be increased considerably: i.e. take into account nodal involvement seen before surgery/ chemotherapy (Gentile et al, IJRBOP 2015). • NB: ESTRO guidelines are meant for elective irradiation of early stage breast cancer; i.e. in case of clinically overt pathological nodes: individualise target volume delineation !