<unk><unk>  usually occurs in women with fallopian tube dysfunction. There are a number of risk factors for<unk> <unk> es, among them pelvic inflammatory disease, infertility, DES exposure, tubal surgery, smoking, previous<unk><unk> , multiple sexual partners, current IUD use, tubal ligation, and previous abortion. The most potent risk factor in the development of<unk><unk>  is tubal surgery.
Ectopic pregnancy risk factors
Endometriosis risk factors
Mastitis risk factors
Pelvic inflammatory disease risk factors
Endometrial hyperplasia risk factors
Struma ovarii risk factors
Cervicitis risk factors
Chlamydia infection risk factors