A proximal fallopian tube blockage does not always require surgery or IVF. Proximal blockages can often be reopened in a 30-minute image-guided procedure, and lipiodol flushing of the tubes carries a recognised fertility benefit of its own.
Apparent proximal occlusion on HSG or HyCoSy can sometimes reflect mucus, debris or tubal spasm rather than fixed scarring. These can often be cleared without surgery.
Tubal recanalisation uses a fine catheter and guidewire passed through the cervix to the tubal opening under X-ray guidance. If a proximal blockage is present, it can often be crossed and cleared, with contrast used to confirm patency. Lipiodol flushing uses an oil-based contrast medium; randomised evidence supports a fertility benefit in selected women, particularly in unexplained infertility.
Review of your fertility work-up with your referring GP or fertility specialist. The procedure is timed to the first half of your cycle, after your period and before ovulation.
Awake or with light sedation. Speculum, soft cervical catheter, no incisions. Period-like cramping during the procedure is common and brief.
Normal activity the same or next day; spotting for a day or two is expected.
If the procedure is uncomplicated, you can try to conceive in the same cycle once you feel comfortable after the procedure. Results are reported to your fertility specialist or GP the same week.
Proximal blockages can be reopened in the large majority of attempts, and a meaningful proportion of couples conceive naturally in the following months, particularly when the tubes are otherwise healthy. Lipiodol flushing adds a genuine, evidence-supported fertility benefit in unexplained infertility. These procedures do not treat distal tubal occlusion, hydrosalpinx or severe tubal scarring; in those settings surgery or IVF may be more appropriate.
Risks are low: cramping and spotting are expected; uncommon risks include infection (screened and covered where appropriate), tubal perforation by the fine wire (usually of no consequence), and re-blockage over time. Radiation dose is kept minimal and is timed to avoid an established pregnancy.
Yes, randomised studies and meta-analyses show higher pregnancy rates after lipiodol tubal flushing, especially in unexplained infertility. The effect lasts several months after the flush. Dr Tarr trained under pioneers of this technique in Vancouver.
Sometimes, for proximal blockage or unexplained infertility it's a far simpler, cheaper first step, and it doesn't delay or preclude IVF. For distal blockage, hydrosalpinx or significant pelvic disease, IVF or surgery may be the more appropriate pathway.
Most women describe strong period-like cramping for a few minutes during the tubal flush, settling quickly. Light sedation is available.
Days ~6–12, after bleeding stops and before ovulation, to avoid disturbing a possible early pregnancy.
Selected sources supporting the information on this page. General information only, not a substitute for personalised medical advice. Reviewed by Dr Gregory Tarr; last reviewed September 2026.