Tubal pregnancy; Cervical pregnancy; Abdominal pregnancy
Most forms of ectopic pregnancy that occur outside the fallopian tubes are probably not preventable. However, a tubal pregnancy (the most common type of ectopic pregnancy) may be prevented in some cases by avoiding conditions that might scar the fallopian tubes.
The following may reduce your risk:
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Katz VL, Lentz GM, Lobo RA, Gershenson DM. Katz: Comprehensive Gynecology. 5th ed. Philadelphia, Pa: Mosby;2007.