Target Volume Determination 2015

CTV longitudinal margins

• Adenoca GEJ (mean micro distance): 10.3 + 7.2 mm proximally 94% within 18.3 + 16.3 mm distally N+ 47% • SCC (mean micro distance): 10.5 + 13.5 mm proximally 94% within 30 mm 10.6 + 8.1 mm distally N+ 35% 30 mm proximal 50 mm distal

Gao XS – IJROBP– 2007