or extrauterine pregnancy
Condition in which a fertilized egg is imbedded outside the uterus (see fertilization ).
Early on, it may resemble a normal pregnancy , with hormonal changes, amenorrhea , and development of a placenta. Later, most patients have pain as the growing embryo stretches the structure it is attached to. Rupture may cause life-threatening bleeding. A tubal pregnancy may result from obstruction of the egg's passage through the fallopian tube. In an ovarian pregnancy, the egg is fertilized before it leaves the ovary . Implantation elsewhere in the abdomen is an abdominal pregnancy.