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Elective nodal CTV: Caudal extension
Ng et al., Australasian Gastrointestinal Trials Group
(AGITG) Contouring Atlas and Planning Guidelines for
Intensity-Modulated Radiotherapy in Anal Cancer, Int. J.
Radiation Oncology Biol. Phys., Vol 83, 1455-1462, 2005.
• In case of distal one third vaginal involvement
• Include inguinal nodes continuously from the external iliac
nodes at least 2 cm caudal to the saphenous/femoral
junction/upper edge of trochanter minor