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Field borders [AP-PA field]
•
Superior border- L4-L5 junction (to encompass the
common iliac node)
•
Lateral border- 1.5 cm from the widest pelvic part of
the pelvic brim
•
Inferior-no vaginal wall involved- lower border of
the obturator foramen.
•
If they are then – 2cm below the lower most point of
disease