Three possible outcomes of ectopic pregnancy occurring in the fallopian tube

Ectopic pregnancy often occurs in the fallopian tube, because the lumen of the fallopian tube is narrow, the wall is thin, and the submucosal tissue and muscle layer are adapted to the growth and development of the fetus. When the fallopian tube pregnancy develops to a certain extent, the following outcomes may occur:

abortion

In the case of tubal ampulla pregnancy, abortion usually occurs between 8 and 12 weeks of pregnancy. If the entire embryonic sac is completely detached from the tubal mucosa and discharged into the abdominal cavity through retrograde peristalsis of the tubal, it is a complete tubal pregnancy abortion, bleeding will not be too much, and abdominal pain will be relieved after the abortion occurs; if the embryonic sac is not completely detached and part of it is still attached to the tubal wall, it is an incomplete tubal abortion, and the trophoblast cells continue to grow and erode the tubal wall, resulting in repeated bleeding, forming tubal hematoma or hematoma around it, and bleeding accumulates in the uterine rectal pouch, and even stays in the abdominal cavity.

Ruptured pregnancy

The fertilized egg implants between the folds of the fallopian tube mucosa. As the blastocyst grows and develops, the villi erode the muscular layer and serosa toward the tube wall, and finally penetrate the serosa, resulting in a ruptured tubal pregnancy. The muscular layer of the fallopian tube is rich in blood supply, and rupture causes rapid and massive bleeding, forming a hematoma in the pelvic or abdominal cavity. If not treated in time, shock may occur.

Secondary ectopic pregnancy

In the case of tubal pregnancy or rupture, the embryonic sac is discharged from the fallopian tube into the abdominal cavity or broad ligament. Most of them will die, but occasionally the embryonic sac will survive and the villous tissue will attach to the original position or be re-implanted after being discharged into the abdominal cavity to obtain nutrition. The embryo continues to develop and forms a secondary abdominal pregnancy. If the rupture is in the broad ligament, it can develop into a broad ligament pregnancy.