A number of factors may increase a woman's chances of ectopic pregnancy including reversal of tubal sterilization, endometriosis, a past case of pelvic inflammatory disease, fallopian tube defects or damage, smoking, and past ectopic pregnancies. Most contraceptive devices do not increase the chances of ectopic pregnancy, but using the contraceptive mini-pill or progesterone-releasing IUD does carry a slightly higher risk.
Ectopic pregnancies are typically treated with medication or, as a last resort, laparoscopic or abdominal surgery. In the vast majority of cases, the fetus will not survive as it does not have space to grow or access to the nutrients it needs to thrive. Because miscarriage is so common, some doctors prefer to simply monitor an ectopic pregnancy rather than resorting to treatment.