Abstract
Background Although the possibility of ectopic pregnancy after intake of levonorgestrel (LNG) as an emergency contraceptive (EE) pill is well-known, the causality has not been well established. Case A 27-year-old nulliparous woman with regular menstrual periods took 1.5-mg LNG EE midcyclic 5 h after an unprotected intercourse. She had prolonged vaginal bleeding at the expected time. She consulted the general practitioner because of continuous vaginal bleeding for 4 weeks and lower abdominal pain. The pregnancy test was positive, and her symptoms and clinical findings suggested an ectopic pregnancy. At emergency surgery, she was found to have a left tubal pregnancy. Conclusion The possible role of 1.5-mg LNG EE in causing ectopic pregnancy is discussed. A high serum LNG concentration decreases ciliary activity and tube motility, but further epidemiological studies are necessary to establish the risk of ectopic pregnancy following intake of LNG EE.
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