Getting Diagnosed

The diagnostic journey — why it takes so long

One of the hardest things about Asherman's syndrome is the gap between first suspecting something is wrong and receiving a confirmed diagnosis. For many women, that gap spans months. For some, it spans years. The average time to diagnosis is not well-established in the research literature — this remains an under-studied area, as noted by Mayo Clinic in 2024 — but anecdotally and clinically, delayed diagnosis is the rule rather than the exception.

Part of this is the symptom overlap problem we covered in Chapter 1. But a significant part is also the pathway women are typically directed down: blood tests first, hormonal causes first, watchful waiting offered when everything comes back normal. Asherman's is often only named after several specialists have been seen — sometimes an endocrinologist, a reproductive endocrinologist, a fertility specialist — and after months of inconclusive investigations.

The clinical stakes of delayed diagnosis are real. Adhesions are not static — they can progress. Early-stage adhesions may be filmy and relatively straightforward to address; longer-standing, denser adhesions are more technically challenging to treat, carry higher recurrence risks, and may cause more cumulative damage to the endometrium. This is not said to alarm you. It is said because it matters to seek investigation promptly — and this chapter gives you the tools to do that.

The tests — from initial imaging to gold standard

Not all investigations are equal. Here is a clear, honest account of what each test shows — and what it doesn't — so that you can have an informed conversation about which ones are right for your situation.

Transvaginal ultrasound

Usually the first imaging investigation offered. A probe is placed inside the vagina to produce images of the uterus and ovaries. It provides useful information about overall uterine structure, size, and appearance. For Asherman's, it may show echogenic foci — bright areas within the uterine cavity that can indicate scarring or adhesive disease. However, its sensitivity for detecting intrauterine adhesions is low to moderate: approximately 75%, meaning it misses a meaningful proportion of cases. A normal transvaginal ultrasound does not rule out Asherman's. It is a worthwhile first step, but not the last word.

Saline infusion sonography (SIS / sonohysterogram)

A significantly more informative test. Sterile saline is introduced into the uterine cavity through a thin catheter, expanding the space so that the cavity walls can be visualised clearly on ultrasound. When the cavity is fluid-filled, adhesions become visible as bands or bridges that should not be there. SIS has considerably better sensitivity for intrauterine pathology than standard ultrasound. It is mildly uncomfortable — similar to a cervical smear for most women, though more so for those with cervical stenosis or significant adhesions — and takes around 10–20 minutes. If your doctor has offered only a standard ultrasound, asking whether SIS would be appropriate is a reasonable and informed question.

Hysterosalpingography (HSG)

An X-ray procedure in which contrast dye is introduced into the uterus through the cervix. The dye outlines the uterine cavity and fallopian tubes, and X-rays are taken as it flows. In Asherman's, adhesions may appear as filling defects — irregular spaces or absent areas where the dye fails to flow normally. HSG provides useful information about both the uterine cavity and tubal patency (whether the tubes are open), and has sensitivity of around 75% for intrauterine pathology. It involves radiation exposure and can be painful, particularly in women with significant adhesions or cervical stenosis. It is a reasonable investigation for women also investigating tubal factors, but is not the most sensitive option for adhesion diagnosis alone.

The oestrogen-progesterone challenge test

A clinical, not imaging, test. You are given oestrogen (to build the endometrial lining) followed by progesterone (to trigger a withdrawal bleed). In a woman with a functioning endometrium, this reliably produces a period-like bleed within a few days of completing the progesterone. If no bleed occurs despite normal baseline hormone levels, this is a strong clinical indicator that the endometrium is absent, non-functional, or obstructed by adhesions. It is not definitive — it cannot tell you the extent of adhesions or their location — but a failed challenge in the context of a uterine procedure history is highly suggestive and should prompt direct cavity investigation.

Diagnostic hysteroscopy — the gold standard

This is the investigation that definitively diagnoses Asherman's syndrome. A hysteroscope — a very thin, flexible or rigid camera — is passed through the cervix into the uterine cavity under direct vision. The surgeon can see the cavity in real time: its shape, the condition of the endometrium, and the presence, location, extent, and nature of any adhesions. No other test provides this level of information.

The critical advantage of diagnostic hysteroscopy over all imaging investigations is that it allows simultaneous diagnosis and treatment. If adhesions are found during a diagnostic hysteroscopy and the surgeon is appropriately skilled and equipped, they can be divided in the same procedure. This is one of the key questions to ask before your hysteroscopy: will adhesions be treated if found, or is this a diagnostic-only procedure?

MRI

Magnetic resonance imaging is not a first-line investigation for Asherman's, but it has a role in severe or complex cases — particularly where the uterine cavity may be completely obliterated, where standard hysteroscopy would be technically very difficult, or where additional pelvic pathology needs assessment. MRI can characterise the uterine anatomy in considerable detail and can sometimes show absent or markedly thinned endometrium. It is typically requested by a specialist, not as an initial investigation.

Test comparison at a glance

The grading system — what mild, moderate, and severe means

Once adhesions are confirmed by hysteroscopy, they are typically classified using the American Fertility Society (AFS) grading system. Understanding your grade matters — not because it determines your worth or your outcome, but because it shapes what treatment is likely to involve, how complex the surgical process will be, and what realistic expectations look like.

Mild (Grade I)

Adhesions are thin and filmy — more like membranes or veils than dense scar tissue. Less than one-third of the uterine cavity is involved. Periods are typically normal or mildly reduced. Mild adhesions often respond well to a single hysteroscopic procedure, and fertility outcomes following treatment are generally favourable. This is the most treatable end of the spectrum.

Moderate (Grade II)

A combination of filmy and denser adhesions. Between one-third and two-thirds of the uterine cavity is affected. Periods are typically light (hypomenorrhea). The cavity is partially but not completely obstructed. Treatment success is good but may require more than one procedure, and adhesion prevention protocols — hormone therapy, barrier agents — become particularly important to reduce recurrence.

Severe (Grade III)

Dense, fibrous adhesions involving more than two-thirds of the uterine cavity. Periods are absent (amenorrhea). The cavity may be substantially or completely obliterated. Treatment is more technically complex, recurrence rates are higher, and the prognosis for fertility, while not hopeless, requires realistic and careful management. Severe cases are best managed by surgeons with specific expertise in operative hysteroscopy for Asherman's.

It is worth noting that grading systems have limitations. Two surgeons assessing the same cavity can assign different grades. The AFS system is the most widely used but is not the only one. What matters most is not the number on a scale — it is what your specific surgeon finds, what they plan to do about it, and what their protocol for aftercare looks like.

How to find the right specialist

This is, for many women, the hardest part of the diagnostic process. Asherman's is not a common condition, and not every gynaecologist has the experience or training to manage it well. Going to the right person makes a meaningful difference to outcome.

What to look for

You are looking for a gynaecologist who:

• Specialises in uterine factor conditions and has specific experience with intrauterine adhesions
• Performs operative hysteroscopy regularly — not just diagnostically, but surgically, including for adhesiolysis (adhesion removal)
• Has a clear and consistent post-operative protocol for adhesion prevention, including hormone therapy and follow-up planning
• Will take time to discuss your specific situation, answer your questions, and explain their approach

Fertility clinics and reproductive medicine units within hospitals often have the greatest concentration of hysteroscopy expertise. University teaching hospitals and centres that handle complex infertility or uterine surgery are worth seeking out. Asherman's-specific online communities can be a valuable source of specialist recommendations — women who have been through treatment in your region often know which surgeons have real experience with the condition.

Questions to ask a potential specialist

Red flags

Be cautious if a specialist:

• Dismisses your concerns or minimises the significance of your symptoms
• Tells you Asherman's is "not that serious" without engaging with your specific situation
• Offers only watchful waiting when you have clear symptoms and a known procedure history
• Has no clear protocol for what happens after surgery — no mention of hormone therapy, no second-look planned, no follow-up structured
• Has limited or no experience with operative hysteroscopy for adhesive disease

You are allowed to seek a second opinion. You are not being difficult. You are managing a condition that requires specific expertise, and finding the right specialist is part of the work. If a consultation leaves you feeling unheard or uncertain, trust that feeling. Another opinion costs you time, but going forward with the wrong surgeon costs potentially much more.

Preparing for your diagnostic hysteroscopy

If you have reached the point of booking a hysteroscopy, you have already done something significant. You pushed until someone took you seriously enough to look directly. That matters. Here is what to expect.

What happens during the procedure

The hysteroscope — a thin, lighted tube with a camera — is passed gently through the cervix into the uterine cavity. A small amount of fluid (or gas, depending on the clinic's preference) is used to expand the cavity so the camera can see clearly. The surgeon views the cavity on a screen in real time. In a purely diagnostic procedure, they will assess the endometrium and any adhesions present, document their findings, and guide treatment planning. In a combined diagnostic-operative procedure, adhesions may be divided at the same time using small instruments passed through the hysteroscope.

Anaesthesia options

This varies by clinic, individual circumstances, and personal preference. Options typically include:

• Local anaesthesia (paracervical block): offered in some outpatient or office-based settings; allows the procedure without sedation, though some women find it uncomfortable
• Conscious sedation: you are awake but relaxed and less aware of discomfort; common in day procedure settings
• General anaesthesia: you are fully asleep; often used for operative procedures, severe cases, or where significant pain sensitivity is expected

Ask your surgeon what they recommend for your situation, and do not hesitate to express your preferences. Significant anxiety about the procedure is worth discussing — it can influence which approach is right for you.

What to ask before you go in

• "Will you treat adhesions if you find them?" — clarify whether this is diagnostic-only or combined; if diagnostic-only, ask what the timeline for operative hysteroscopy would be
• "What adhesion prevention will be planned immediately after surgery?" — oestrogen therapy to support endometrial recovery, a barrier agent to prevent the walls re-adhering
• "Will a second-look hysteroscopy be scheduled?" — a follow-up procedure 6–8 weeks later to assess healing and address any re-formation of adhesions
• "Who do I contact if I have concerns after the procedure?"

What to expect physically

After a hysteroscopy, most women experience some cramping — typically similar to period pain — for a few hours to a couple of days. Light spotting or watery discharge for a few days is normal. Most women can return to normal activities within 24–48 hours, though this varies. Avoid penetrative sex, tampons, and swimming until any discharge has stopped — usually around a week, or as advised by your clinic.

If you experience heavy bleeding, significant pain that is not responding to paracetamol or ibuprofen, fever, or any signs of infection (foul-smelling discharge, worsening pain, high temperature), contact your clinic or seek medical attention promptly.

I remember sitting in the waiting room before mine. I had been through months of tests, contradictory advice, and appointments where I left feeling more confused than when I arrived. There was something clarifying about finally being in a room where someone was going to look. Hard news is still news. Knowing is still better than not knowing.

The next chapter — Chapter 3: Holistic Support — covers the things you can actively do alongside your medical care to support endometrial recovery and your own sense of agency throughout this process. Because while you wait, and while you prepare, there is genuinely more that can be done than most doctors will tell you.