Outer Configuration of the Uterine Venous Pathways

Description

Arising from the lateral uterine wall, the uterine venous plexus collects blood from the myometrium and endometrium and converges into paired uterine veins that course within the base of the broad ligament (parametrium). Along the uterine cornu, small venous channels communicate with the ovarian venous plexus near the uterine tube and ovary, while inferiorly the plexus extends toward the cervix and upper vagina. The uterine veins typically run with the uterine artery and pass medially across the pelvic sidewall before draining to the internal iliac venous system. Dense, valveless-leaning communications dominate. A network, not a single trunk. Understanding the outer configuration of uterine venous pathways matters in pelvic surgery because these thin-walled veins are the usual source of brisk bleeding during hysterectomy, myomectomy, and cesarean hysterectomy for placenta accreta spectrum. Their close relationship to the ureter in the parametrial tunnel, and their continuity with vaginal and ovarian venous plexuses, explains why venous injury can be diffuse and difficult to control with a single ligature. The same anatomy underlies pelvic congestion syndrome, where dilated uterine and ovarian veins contribute to chronic pelvic pain and vulvar varicosities, and it helps clarify routes of hematogenous spread in pelvic infection and malignancy. Use this plate in gross anatomy and OB-GYN teaching to contrast arterial uterine supply with venous return, or in operative manuals discussing hemostatic steps at the uterine pedicle and cervicovaginal junction. It also fits radiology and interventional content on pelvic venography, uterine vein embolization strategies, and post-partum hemorrhage algorithms that hinge on recognizing venous plexus anatomy. Anatomical accuracy verified by SciePro's Medical Advisory Board.