Blocked Fallopian Tubes: What an HSG Test Shows in a Fertility Work-up

By Dr. Prithivi Perum, Obstetrician, Gynecologist, Fertility Expert & Laparoscopic and Robotic Surgeon at Mathrutva Women Healthcare, Manikonda, and Medicover Women & Child Hospitals, Hyderabad.

Quick answer: The fallopian tubes carry the egg toward the uterus. A hysterosalpingogram, or HSG, is a dye X-ray that shows whether the tubes are open. It is done after a period and before ovulation, once pregnancy is excluded. One open tube can still allow conception. Blocked tubes on both sides usually lead to a discussion about IVF.

At a fertility consultation in Manikonda, Dr. Prithivi Perum does not read a tube test in isolation. Age, cycle history, ovarian reserve, and a semen analysis belong in the same plan.

Why the Tubes Matter

Sperm meet the egg in the tube. If both tubes are closed, that meeting does not happen in the body, no matter how regular the cycle is. If one tube is open, pregnancy can still occur, though it may take longer, and an ectopic pregnancy is one of the risks your doctor will mention. Pain on one side in early pregnancy, if you conceive after a tubal problem, needs a same-day scan.

Why a Tube Can Block

• Past pelvic infection
• Endometriosis
• Previous pelvic or tubal surgery
• Tuberculosis of the pelvis, which is still seen in fertility clinics in India
• A tube filled with fluid, called a hydrosalpinx, which can also affect IVF if it is left in place

Some of these are treated with fertility enhancement surgery. Some are not helped by opening the tube and are managed with IVF instead. The picture on the HSG, and sometimes a laparoscopy, is what guides that choice.

What an HSG Involves

Dye is passed through the cervix while X-ray images are taken. You may feel cramping like a period for a few minutes. The test is timed after bleeding has stopped and before ovulation, with a negative pregnancy test. Tell the clinic if you have a pelvic infection, fever, or an allergy to contrast dye. A short course of pain relief is often suggested around the procedure. Antibiotics are used when your doctor judges the infection risk to be higher. They are not automatic for every woman.

How Results Are Read

An open tube lets dye spill into the pelvis. A blocked tube stops the dye. A uterus image on the same study can show a filling defect such as a polyp or fibroid, which may need a separate hysteroscopy. A spasm of the tube can look like a block on one picture, so an uncertain report is sometimes repeated or checked with a different test rather than treated at once.

“An HSG answers whether the path is open. It does not, by itself, tell us the right treatment. Age and the semen report still sit on the same table.”

- Dr. Prithivi Perum

What Happens After the Report

If at least one tube is open and the rest of the work-up is favourable, timed intercourse or IUI may still be reasonable. If both tubes are blocked, or a hydrosalpinx is present, the conversation usually moves to IVF, sometimes after surgery to deal with the fluid-filled tube. Couples who have already tried for a year, or for six months if the woman is 35 or older, should not add another long wait while reports sit in a file.

Bring old films if you have them. Consultations at Mathrutva are Monday to Saturday, 5:00 PM to 9:00 PM. Call +91 9949666905. The centre is at Rukmini Complex, Lalamma Gardens, Puppala Guda, Manikonda.

Summary

Blocked tubes are a structural cause of infertility and they show up on a properly timed HSG. The result changes the plan. It does not replace the rest of the fertility work-up for either partner.

Key Takeaways

• An HSG is a dye X-ray done after a period and before ovulation.
• One open tube can still allow natural conception.
• Both tubes blocked usually means IVF is discussed.
• The semen analysis and ovarian reserve still matter alongside the tube report.