Blocked Fallopian Tubes: Diagnosis, HSG Scans, and Fertility Options
Tubal factor infertility explained: causes, hysterosalpingography testing, laparoscopic repair, and IVF pathways.
Reviewed by Dr. Dileep Kumar H R, MBBS, DGO, DRM
October 2026 · Evidence-Based Healthcare
The fallopian tubes are not just passive conduits; their delicate ciliated linings pick up the released egg, provide the site where sperm fertilizes the egg, and transport the early embryo to the uterus over several days.
Tubal blockages account for 25% to 30% of female infertility cases. Causes include pelvic inflammatory disease (PID), previous pelvic tuberculosis (common in South Asia), endometriosis, and previous ectopic pregnancies or pelvic surgeries.
Diagnosis is typically confirmed via Hysterosalpingography (HSG) — a specialized X-ray utilizing a radio-opaque dye — or Sonohysterosalpingography (SSG) with ultrasound.
If only mild distal adhesions or proximal spasm are found, laparoscopic or hysteroscopic tubal cannulation may restore patency. If tubes are severely damaged, hydrosalpinx-dilated, or blocked, IVF provides the most reliable pathway to pregnancy by bypassing the tubes completely.
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Frequently Asked Questions
A hydrosalpinx is a fallopian tube blocked at its end and filled with toxic fluid. This fluid can leak backward into the uterine cavity, impairing embryo implantation. Clipping or removing a hydrosalpinx prior to IVF significantly boosts pregnancy rates.