Gynae BT 2017

Nodal CTV ( CTV-E )

Taylor A et al., IJROBP 2005

7 mm margin with minor adjustments: 99 % coverage of lymph nodes

Join external & internal iliac contours, keep 18 mm from sidewall

Presacral nodes: keep 10 mm in front of sacrum

Taylor A, Rockal AG, Reznek RH et al. Mapping pelvic lymph nodes: guidelines for delineation in intensity- modulated radiotherapy. Int. J. Radiation Oncology Biol. Phys., Vol 63.no.5, 1604-1612, 2005.