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Blocked Fallopian Tubes: Causes, Tests & Treatment Options
May 08, 2026
The fallopian tubes serve as the pathway through which eggs travel from the ovaries to the uterus, and where fertilisation typically occurs. When one or both tubes are blocked, this journey is disrupted, preventing natural conception. Furthermore, blocked fallopian tubes are a significant cause of female infertility, accounting for a notable proportion of cases worldwide. Understanding the causes, how blockages are detected, and what treatment options are available is useful for anyone navigating a fertility evaluation.
What are Fallopian Tube Blockages?
A fallopian tube blockage, also referred to as tubal occlusion, means that the tube is partially or fully obstructed at some point along its length. This can occur at the end closest to the ovary (distal blockage), at the point where it connects to the uterus (proximal blockage), or at any point in between. A complete blockage on both sides makes natural conception virtually impossible. A blockage on one side reduces the chances of conception but does not necessarily prevent it, as the other tube may still function normally.Common Causes of Blocked Fallopian Tubes
- Pelvic inflammatory disease (PID): Infections that reach the fallopian tubes, often from sexually transmitted infections such as chlamydia or gonorrhoea, can cause inflammation and scarring.
- Endometriosis: When tissue similar to the uterine lining grows outside the uterus, it can cause adhesions around the tubes and ovaries that affect tubal function.
- Previous surgery: Abdominal or pelvic surgery, including previous caesarean sections or surgery for ectopic pregnancy, can leave adhesions that affect the tubes.
- Hydrosalpinx: Fluid accumulation within a blocked fallopian tube due to a past infection. This can also negatively affect IVF outcomes if untreated.
- Uterine fibroids: Large fibroids near the point where the tube connects to the uterus can cause compression or blockage.
How are Blocked Fallopian Tubes Diagnosed?
A gynaecologist or fertility specialist will recommend one or more of the following investigations:- Hysterosalpingography (HSG): An X-ray procedure where a contrast dye is introduced through the cervix. If the dye flows freely through both tubes and spills into the pelvis, the tubes are open. Blockage is indicated if the dye does not pass through.
- Saline infusion sonography (SIS): An ultrasound-based approach where saline or a contrast agent is used to assess tubal patency.
- Laparoscopy: A surgical procedure that allows direct visualisation of the fallopian tubes and surrounding structures. It is considered the most accurate diagnostic method and can also be used for treatment in the same sitting.
Treatment Options for Blocked Fallopian Tubes
Treatment depends on the location and severity of the blockage, as well as other fertility factors.- Laparoscopic surgery: For certain types of blockages, particularly those caused by adhesions or mild scarring, surgical removal of the obstruction may restore tubal function. Outcomes vary depending on the extent of damage.
- Tubal cannulation: A thin tube is guided through the cervix and uterus to clear a proximal blockage. This is a less invasive option suitable for specific types of blockage.
- IVF: For women with bilateral blockage, significant tubal damage, or where surgery has not been successful, in vitro fertilisation bypasses the tubes entirely. Eggs are retrieved directly from the ovaries, fertilised in a laboratory, and embryos are transferred to the uterus.
Conclusion
Blocked fallopian tubes are a treatable cause of infertility, and many women with this diagnosis go on to conceive with appropriate support. The key is accurate diagnosis followed by a treatment plan that considers the woman's overall fertility picture. At BirthRight Fertility by Rainbow Hospitals, a thorough evaluation is carried out for every patient, and the most suitable treatment pathway is discussed in full before any decisions are made.Disclaimer
This content is for general educational purposes and does not replace professional medical advice. Consult a qualified fertility specialist for personalised guidance on tubal factor infertility.Related BlogView More
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