Endometriosis and Fibroid tumours are both conditions which are becoming present in more women every year. Pelvic inflammatory disease is another common condition which women suffer from. Pelvic inflammatory disease or PID, is an umbrella term for a number of different problems that create an inflammatory infection in the female reproductive system.
PID is almost always the direct result of a sexually transmitted disease, such as gonorrhoea or chlamydia, and is responsible for about 100,000 cases of female infertility per year. All of these conditions can cause blockage to the fallopian tubes by having adhesions, scar tissue, tumours or polyps form inside the path of the tube.
The fallopian tubes may also become stuck to other parts of the internal body; the bladder, ovaries, uterus, bowels, ect. Damaged fallopian tubes can become twisted or the walls of the tubes themselves may adhere together causing a total blockage.
Partially damaged fallopian tubes may remain open enough for pregnancy to occur, but a partial blockage increases the risk for ectopic pregnancy. The fallopian tubes are very thin to begin with, it does not take much for them to become blocked, preventing the ova from traveling through.
Studies have shown that low progesterone levels, smoking and use of fertility medications may alter how the fallopian tubes function, which increases risk for ectopic pregnancy. Any of the conditions above may cause a partial tubal blockage as well, which also increases risk for ectopic pregnancy.