Risk factors

Congenital anomalies of fallopian tubes such as Tubal Hypoplasia, Tortuosity, Congenital diverticuli  or Partial stenosis.

Inflammatory conditions such as Pelvic inflammatory disease, septic abortion, puerperal sepsis

Surgical procedures such as Reconstructive tubal surgery, recanalization of tubes and pelvic surgery.

Uterine fibroids

Cigarette smoking 

Intrauterine Contraceptive devices endometriosis

Previous history of ectopic pregnancy

Asherman syndrome