Fallopian tube obstruction is the absence of tubal lumen. As a result, the sperm and the egg can’t move properly along the fallopian tube, and fertilization doesn’t occur.
Tubal obstruction is the most common cause of infertility. It occurs in 20–25% of the couples who have trouble conceiving.
It can be observed in the cases of:
- pelvic adhesions
- previous tubal surgeries (e.g., ectopic pregnancy)
- inflammatory fluid in the tubal lumen as a result of lymph and blood circulation disorders
- sexually transmitted infections (chlamydia, gonorrhea)
- chronic prostatitis in men, which causes infection due to pathogenic bacteria