In 1950, Hodgkinson et al (3) collected 72 cases of ruptured varicose uterine vein from literature and noted 49% mortality.
So rupture of varicose uterine vein should be kept in differential diagnosis of hemoperitoneum in pregnancy.
Because maternal blood and fetal blood effectively travel in the same direction in the placenta, umbilical vein [O.sub.2] and C[O.sub.2] equilibrate with that in the maternal uterine vein
In the human placenta, maternal blood and fetal blood effectively travel in the same direction (concurrent exchange); thus, umbilical vein [O.sub.2] and C[O.sub.2] equilibrate with that in the maternal uterine vein.
Varices of the broad ligament, superficial uterine veins
and utero-ovarian ligament have been described in several case reports (3,4).
Torsion causes uterine veins
to be obstructed and with continued inflow of arterial blood, marked congestion and edema occurs, cyanotic condition and necrosis of uterine horn is seen in present case of torsion of uterine horn.
Kliman discovered that these areas of wanton cell death occur near uterine veins
, away from the sites where placental cells invade maternal blood vessels.