Asherman Syndrome Hysteroscopy: Diagnosis and Treatment Explained

What Is Asherman's Syndrome?

Asherman’s syndrome, also called intrauterine adhesions or uterine synechiae, is a condition in which scar tissue forms inside the uterus. This scar tissue can cause parts of the uterine walls to stick together. The condition usually develops when the uterine lining is damaged and heals by forming scar tissue instead of regenerating normally. This can reduce the size of the uterine cavity.

Scar tissue can interfere with normal uterine function, affecting menstruation, fertility and pregnancy. In mild cases, adhesions involve only small areas of the uterine lining. In severe cases, they can significantly distort the uterine cavity. Because symptoms vary widely, an accurate diagnosis is essential for effective treatment.

What Causes Asherman Syndrome?

Asherman syndrome usually develops after procedures or conditions that damage the uterine lining. One of the most common causes is dilation and curettage (D&C), a procedure sometimes performed after miscarriage, abortion or childbirth to remove uterine tissue. Research shows that over 90% of Asherman syndrome cases occur following pregnancy-related uterine procedures such as D&C.

Other possible causes include:

• Uterine surgery, such as fibroid removal
• Infections affecting the uterus
• Complications from a Caesarean section
• Radiation therapy in the pelvic region
• Severe uterine infections

What Are the Symptoms of Asherman Syndrome?

Asherman syndrome symptoms can vary depending on how much scar tissue is present in the uterus. Some women may notice changes in their menstrual cycle, while others may face fertility issues.

Common symptoms include:

• Light or very scanty menstrual periods, or complete absence of menstruation
• Recurrent miscarriages
• Infertility or difficulty conceiving
• Pelvic pain or cramping
• Pain during menstrual flow if adhesions block the uterine cavity

In some cases, symptoms may be mild or even absent. This is why further evaluation is often needed, especially for women experiencing fertility challenges.

How Is Asherman Syndrome Classified?

Asherman syndrome is classified based on the extent and severity of scar tissue in the uterus. This classification helps doctors plan treatment and predict fertility outcomes.

The condition is generally grouped into three levels:

• Mild: Small, thin areas of scar tissue affect only a limited portion of the uterine cavity.
• Moderate: Thicker adhesions partially block the uterine cavity or cervix.
• Severe: Large, dense areas of scar tissue significantly distort or may close the uterine cavity.

Knowing the severity of adhesions helps doctors choose the most appropriate treatment. Hysteroscopy allows specialists to directly observe and classify adhesions, ensuring an accurate diagnosis and a personalised care plan.

How Is Asherman Syndrome Diagnosed?

Diagnosing Asherman syndrome involves several tests to evaluate the uterine cavity.

Initial imaging tests may include:

• Transvaginal ultrasound: To check the uterine structure.
• Hysterosalpingography (HSG): An X-ray procedure to examine the uterine cavity and fallopian tubes.
• Saline infusion sonography: Uses fluid to improve ultrasound imaging of the uterus.

These tests can suggest the presence of adhesions, but they may not reveal all scar tissue. For a more precise assessment, doctors often recommend hysteroscopy, which provides a direct and detailed view of the uterine cavity.

Why Is Hysteroscopy Important for the Diagnosis of Asherman Syndrome?

Hysteroscopy is considered the gold standard for diagnosing intrauterine adhesions, including Asherman syndrome. A hysteroscope, a thin instrument with a camera and light, is inserted through the cervix to provide a direct view of the uterine cavity.

This direct visualisation allows doctors to:

• Identify scar tissue inside the uterus.
• Determine the location and severity of adhesions.
• Assess the condition of the uterine lining.

By providing a clear and detailed view, hysteroscopy enables accurate diagnosis and helps plan the most appropriate treatment.

How Does Asherman Syndrome Hysteroscopy Work?

During the procedure, the hysteroscope is gently inserted through the cervix. The uterus is filled with fluid to expand the cavity, which improves visibility.

The attached camera allows the doctor to examine the uterine walls in detail. If adhesions are detected, the doctor can often remove them during the same procedure using specialised instruments. This approach helps restore the normal shape and function of the uterine cavity.

What Happens During Hysteroscopic Treatment?

If adhesions are detected, doctors may perform hysteroscopic adhesiolysis, the surgical removal of scar tissue inside the uterus. This is the standard treatment for Asherman syndrome.

During the procedure, adhesions are carefully cut or separated while preserving healthy uterine tissue. The goal is to restore the uterine cavity to its normal shape and function.

Experienced gynaecologists perform the surgery using delicate instruments to minimise damage to the uterine lining. Hysteroscopy provides direct visualisation, allowing precise treatment with minimal invasiveness.

What Treatments Follow Adhesion Removal?

After hysteroscopic surgery, doctors may recommend additional treatments to support healing and prevent adhesions from reforming. These can include:

• Hormone therapy: Estrogen may be prescribed to help the uterine lining regenerate and heal properly.
• Intrauterine devices or balloons: A small balloon or device may be temporarily placed inside the uterus to keep the walls from sticking together during recovery.
• Follow-up hysteroscopy: A repeat hysteroscopy may be performed later to confirm that the uterine cavity has healed and adhesions have not returned.

Can Hysteroscopy Improve Fertility in Asherman Syndrome?

Many individuals with Asherman syndrome seek treatment due to fertility concerns. Scar tissue in the uterine cavity can interfere with embryo implantation or increase the risk of pregnancy complications.

Studies show that hysteroscopic removal of adhesions can often restore normal menstrual cycles and improve fertility outcomes. Once the uterine cavity is restored and the lining heals properly, the chances of successful conception may increase.

However, fertility results can vary depending on factors such as the severity of adhesions and overall reproductive health. Consulting a fertility specialist can help determine the most appropriate treatment plan for each individual.

How Successful Is Hysteroscopy for Asherman Syndrome?

The success of hysteroscopic treatment largely depends on the extent of adhesions and the health of the uterine lining. Individuals with mild to moderate adhesions typically experience better outcomes than those with severe scarring.

Postoperative follow-up, hormone therapy and preventive measures can further improve results and help reduce the risk of adhesions recurring. With proper care, many patients see restored uterine function and improved fertility potential.

What Is Recovery Like After Treatment?

Recovery after hysteroscopic treatment for Asherman syndrome is usually quick, as the procedure is minimally invasive. Most patients can go home the same day. Mild cramping or light vaginal bleeding may occur for a few days.

During recovery, it is important to:

• Avoid strenuous activities for a short period.
• Take prescribed medications as directed.
• Attend all follow-up appointments.
• Monitor your recovery to ensure proper healing of the uterine lining and to check for any signs of adhesion recurrence.

Are There Risks or Recurrence Possibilities?

Hysteroscopic treatment is generally effective, but adhesions can sometimes recur, particularly in severe cases. The risk of recurrence may depend on factors such as:

• The extent of the initial adhesions.
• The condition of the uterine lining.
• Whether preventive measures were used after surgery.

To manage this risk, doctors often schedule follow-up evaluations to monitor healing and detect any new adhesions early. Despite these possibilities, hysteroscopy remains one of the most reliable and effective treatments for Asherman syndrome.

When Should You See a Doctor?

You should consult your doctor promptly if you notice:

• Significantly lighter menstrual periods
• Absence of menstruation after uterine surgery
• Recurrent pregnancy loss
• Difficulty conceiving

Early evaluation can help detect uterine conditions and allow timely treatment. If Asherman syndrome is suspected, hysteroscopy may be recommended to confirm the diagnosis and guide appropriate treatment.

Takeaway

Asherman syndrome hysteroscopy is a minimally invasive procedure essential for diagnosing and treating intrauterine adhesions. The condition occurs when scar tissue forms inside the uterus, often after procedures affecting the uterine lining, potentially causing menstrual irregularities, fertility issues or pregnancy complications.

Hysteroscopy provides a direct view of the uterine cavity, allowing accurate diagnosis and, when needed, removal of adhesions through hysteroscopic adhesiolysis to restore normal uterine anatomy.

Post-procedure treatments, such as hormone therapy or preventive measures, support healing and reduce the risk of recurrence. With timely diagnosis and proper care, many individuals see improvements in symptoms and fertility outcomes. Always consult your doctor to determine the best treatment plan for your specific health needs.