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Parametrium - borders
Lim, IJROBP 2011; 79(2)348–355
GYN IMRT consortium EMBRACE-II
Anterior Posterior wall of bladder or posterior
border of external iliac vessel
Posterior wall of bladder or posterior border
of external iliac vessel
Posterior Uterosacral ligaments and mesorectal
fascia
Uterosacral ligaments and mesorectal fascia
Superior Top of fallopian tube/ broad ligament.
Depending on degree of uterus flexion,
this may also form the anterior
boundary of parametrial tissue.
Top of fallopian tube/ broad ligament.
Depending on degree of uterus flexion, this
may also form the anterior boundary of
parametrial tissue.
Inferior Urogenital diaphragm Urogenital diaphragm
Lateral Medial edge of internal obturator
muscle/ ischial ramus bilaterally
Medial edge of internal iliac and obturator
vessels