It occurs in one in 300 pregnancies. Previous tubal infections are the likely cause. Pain at Ovulation Spasm in the fallopian tubes and slight bleeding from the ovary at the time of ovulation. Usually it is not severe and does not require medical attention. This in turn can put pressure on the bladder and rectum, also making sexual intercourse uncomfortable and painful.
Surgical removal is the preferred method of treatment.
This is where the fragments of the lining and menstrual flow go back up the fallopian tubes into the abdominal cavity. These fragments remain part of the cycle and during menstruation fill with blood and swell and exert pressure on the surrounding tissue. Eventually this area becomes a large mass of engorged cystic cells, full of blood, which leak and cause severe pain and increase abdominal sensitivity and tenderness.