TABLE 1.

Summary of the main landmarks in each type of radical hysterectomy on each part of the parametria

Dimension Type of radical hysterectomy	Paracervix or lateral parametrium	Ventral parametrium	Dorsal parametrium
A	Halfway between the cervix and ureter  (medial to the ureter–ureter identified  but not mobilized)	Minimal excision	Minimal excision
B1	At the ureter (at the level of the ureteral  bed–ureter mobilized from the cervix  and lateral parametrium)	Partial excision of the vesicouterine ligament	Partial resection of the  rectouterine-rectovaginal  ligament and uterosacral  peritoneal fold
B2	Identical to B1 plus paracervical  lymphadenectomy without resection  of vascular/nerve structures	Partial excision of the vesicouterine ligament	Partial resection of the  rectouterine-rectovaginal  ligament and uterosacral fold
C1	At the iliac vessels transversally, caudal  part is preserved	Excision of the vesicouterine ligament at the  bladder. Proximal part of the vesicovaginal  ligament (bladder nerves are dissected and  spared)	At the rectum (hypogastric nerve  is dissected and spared)
C2	At the level of the medial aspect of iliac  vessels completely (including the  caudal part)	At the bladder (bladder nerves are sacrificed)	At the sacrum (hypogastric nerve  is sacrificed)
D	At the pelvic wall, including resection  of the internal iliac vessels and/or  components of the pelvic sidewall	At the bladder. Not applicable if part of exenteration	At the sacrum. Not applicable if  part of exenteration