Image-Guided Radiotherapy and Chemotherapy in Gynaecological Cancer

Parametrium - borders

GYN IMRT consortium

EMBRACE-II

Posterior wall of bladder or posterior border of external iliac vessel Uterosacral ligaments and mesorectal fascia Top of fallopian tube/ broad ligament. Depending on degree of uterus flexion,

Posterior wall of bladder or posterior border of external iliac vessel

Anterior

Uterosacral ligaments and mesorectal fascia

Posterior

Top of fallopian tube/ broad ligament. Depending on degree of uterus flexion, this may also form the anterior boundary of parametrial tissue.

Superior

this may also form the anterior boundary of parametrial tissue.

Urogenital diaphragm

Urogenital diaphragm

Inferior

Medial edge of internal obturator muscle/ ischial ramus bilaterally

Medial edge of internal iliac and obturator vessels

Lateral

Lim, IJROBP 2011; 79(2)348–355 www.embracestudy.dk