Fallopian tube damage is a common cause
ectopic pregnancy. A fertilized egg can become caught
in the damaged area of a tube and begin to grow there. Some ectopic pregnancies
occur without any known cause.
Common causes of
fallopian tube damage that may lead to an ectopic pregnancy include:
Smoking. Women who smoke or who used to smoke
have higher rates of ectopic pregnancy. Smoking is thought to damage the fallopian
tubes' ability to move the fertilized egg toward the uterus.
Fallopian tube surgery, often used to reverse a
tubal ligation or to repair a scarred or blocked
A previous ectopic pregnancy in a fallopian tube.
Although pregnancy is rare after a
tubal ligation or with an
intrauterine device (IUD), those pregnancies that do
develop may have an increased chance of being ectopic.
In this article
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
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