Four criteria for differentiating ovarian from other ectopic pregnancies: # The gestational sac is located in the region of the ovary. # The ectopic pregnancy is attached to the uterus by the ovarian ligament. # Ovarian tissue in the wall of the gestational sac is proved histologically. # The tube on the involved side is intact.
Spiegelberg criteria
Poser criteria
Millard criteria
Kocher criteria
Bradford Hill criteria
Beers criteria
Centor criteria
Schenck classification