TVD 2016

M. Ng, et al. (AGITG) Int J Radiation Oncol Biol Phys, 2012 C LINICAL TARGET VOLUME FOR GROSS DISEASE P RIMARY TUMOR

CTV-T

• GTV • entire anal canal

• internal and external sphinter • 20 mm isotropic margin, while respecting anatomical boudaries

M. Ng, et al. (AGITG) Int J Radiation Oncol Biol Phys, 2012