Ectopic pregnancy is what causes?

The incidence of tubal pregnancy most parts of the ampulla, about 55 ~ 60%; followed by the isthmus, accounting for 20 to 25%; again umbrella side, 17%; interstitial pregnancy at least, only 2 to 4%

Tubal pregnancy is a common obstetric & gynecological acute abdomen is one, when the tubalpregnancy, abortion or ruptured acute assault, may cause extreme abdominal bleeding, if not timely diagnosis, emergency treatment can be life-threatening.