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Diagnosis

Can an HSG detect endometriosis?

The short answer

An HSG does not reliably detect endometriosis, as most lesions are in areas it cannot show. It checks the uterine cavity and whether the fallopian tubes are open, and can sometimes hint at related problems like tubal blockage or scarring.

An HSG (hysterosalpingogram) is designed to evaluate the uterine cavity and whether the fallopian tubes are open, so it does not reliably detect endometriosis. Most endometriosis lesions are on the outside surfaces of pelvic organs or deeper within tissues, areas an HSG can’t visualize.

That said, an HSG can sometimes hint at problems that can coexist with endometriosis or be related to it, like tubal blockage, scarring, or distorted tubal anatomy. These findings matter, especially when fertility is part of the concern. In our evaluation, we look at your full symptom pattern and history, then use targeted tools like expertly interpreted ultrasound or MRI when appropriate. We reserve surgery and tissue confirmation for situations where it will truly change management.

If you’ve had an HSG and still feel you don’t have clear answers, we can help you connect the dots. Endometriosis is often missed when testing is limited to what’s easiest to measure. Reach out to schedule a consultation so our team can review your symptoms and prior imaging and map out the most direct path to an accurate diagnosis and durable relief.

Where to go from here

Understand it, compare it with what you're feeling, then talk it through with us.

Step 1 · Understand

Understand the condition

Step 3 · Speak with Us

Wondering About Endometriosis Diagnosis?

An HSG can't reliably detect endometriosis, but our specialists evaluate all your symptoms and related factors to provide a comprehensive diagnosis. We're here to help clarify your concerns and guide you forward.

Questions people ask next

All diagnosis questions
  • What tests check infertility when endometriosis is suspected?

    Testing commonly includes transvaginal ultrasound and, when indicated, MRI. A fertility evaluation may also include hormone and ovarian reserve labs, ovulation checks, assessment of the uterine cavity and fallopian tubes, and a partner’s semen analysis.

  • Can imaging confirm endometriosis?

    Imaging can be very helpful, but it usually can’t confirm endometriosis on its own. Ultrasound or MRI may strongly suggest disease, but a normal scan doesn’t rule it out because many small, superficial or microscopic lesions won’t show up on scans.

  • Is laparoscopy the only way to confirm endometriosis?

    Yes. At this time, the only definitive way to confirm endometriosis is laparoscopy, with direct visualization and biopsy of suspected lesions. Imaging and exams can strongly suggest it, but can’t reliably rule it in or out in every case.

Reach Out

Have a question?

Lotus Endometriosis Institute provides California-based surgical evaluation and advanced excision care for patients with suspected endometriosis, adenomyosis, complex pelvic pain, and related conditions.


Many patients contact us from outside California to learn whether traveling for in-person evaluation and possible surgery may be appropriate.

Call Us

(424) 255-1340

(805) 920-0909

Fax: (805) 935-4338

Santa Monica, CA

2121 Santa Monica Blvd, Santa Monica, CA 90404

Operating Hours

8am - 5pm
Monday - Friday

Arroyo Grande, CA

154 Traffic Way, Arroyo Grande, CA 93420