ABSTRACT
Ectopic pregnancy indicates the implantation of the fertilized ovum outside the uterine cavity. The majority of ectopic gestations are located in the fallopian tubes, especially the ampullary part. However, ectopic pregnancies can occasionally implant in other locations, such as the interstitial part of the fallopian tube, the ovaries, rudimentary uterine horn, and abdominal cavity. Ectopic pregnancies such as cesarean scar, cervical, and intramural ectopics are implanted inside the uterus but outside the endometrial cavity, invading the myometrium. Although these nontubal ectopic pregnancies account for only 5% of ectopic pregnancies, they are responsible for a significant number of morbidity and mortality as well as major health consequences due to the high risk of rupture and severe hemorrhage. Sometimes, the location of the pregnancy cannot be identified at the initial assessment, a condition referred to as pregnancy of unknown location, which describes the inability to localize the pregnancy on ultrasound scan in a woman with a positive pregnancy test.
