An opened oviduct with an<unk>  at about seven weeks' gestational age The rate of<unk>  is about 1% and 2% of that of live births in developed countries, though it is as high as 4% in<unk> es involving assisted reproductive technology. Between 93% and 97% of<unk> es are located in a fallopian tube. Of these, in turn, 13% are located in the isthmus, 75% are located in the ampulla, and 12% in the fimbriae.<unk>  is responsible for 6% of maternal deaths during the first trimester of<unk>  making it the leading cause of maternal death during this stage of<unk> . Between 5% and 42% of women seen for ultrasound assessment with a positive<unk>  test have a<unk>  of unknown location, that is a positive<unk>  test but no<unk>  visualized at transvaginal ultrasonography. Between 6% and 20% of<unk>  of unknown location are subsequently diagnosed with actual<unk> .
Ectopic pregnancy
Miscarriage
Ovarian torsion
Appendicitis
Tubo-ovarian abscess
Ovarian cyst
Ovarian pregnancy
Dysmenorrhea