CausesBy Mayo Clinic Staff
A tubal pregnancy — the most common type of ectopic pregnancy — happens when a fertilized egg gets stuck on its way to the uterus, often because the fallopian tube is damaged by inflammation or is misshapen. Hormonal imbalances or abnormal development of the fertilized egg also might play a role.
Jan. 20, 2015
- Frequently asked questions. Pregnancy FAQ 0155. Ectopic pregnancy. American College of Obstetricians and Gynecologists. http://www.acog.org/Patients/FAQs/Ectopic-Pregnancy. Accessed Dec. 9, 2014.
- Cunningham FG, et al. Williams Obstetrics. 24th ed. New York, N.Y.: The McGraw-Hill Companies; 2014. http://accessmedicine.mhmedical.com/book.aspx?bookid=1057. Accessed Dec. 9, 2014.
- Tulandi T. Clinical manifestations, diagnosis, and management of ectopic pregnancy. http://www.uptodate.com/index. Accessed Dec. 9, 2014.
- Tulandi T. Incidence, risk factors, and pathology of ectopic pregnancy. http://www.uptodate.com/index. Accessed Dec. 9, 2014.
- Harms RW (expert opinion). Mayo Clinic, Rochester, Minn. Dec. 15, 2014.