Understanding Uterine Septum

What Is a Uterine Septum?

A uterine septum is a congenital difference in uterine development in which a band of fibrous or muscular tissue partially or completely divides the uterine cavity. Unlike conditions that develop later in life, a uterine septum is present before birth as the reproductive organs form during fetal development.

The severity of a uterine septum varies considerably. Some people have a small partial septum that affects only the upper portion of the uterus, while others have a complete septum that extends farther into the uterine cavity. Many people are unaware they have a uterine septum until they undergo fertility evaluation, experience recurrent pregnancy loss, or have imaging performed for another reason.

Although many individuals with a uterine septum are able to conceive naturally and have healthy pregnancies, a septum may increase the risk of infertility, miscarriage, or certain pregnancy complications in some patients. Whether treatment is recommended depends on reproductive history, pregnancy outcomes, symptoms, and future family-building goals.

How a Uterine Septum Develops

During fetal development, the uterus forms when two structures called the Müllerian ducts fuse together. Normally, the tissue separating these ducts gradually disappears, creating a single uterine cavity.

A uterine septum develops when this tissue does not completely resorb, leaving a partition that partially or completely divides the uterine cavity. The outside shape of the uterus typically remains normal, distinguishing a uterine septum from other congenital uterine differences such as a bicornuate uterus.

Because several congenital uterine conditions can appear similar on initial imaging, additional testing is sometimes needed to establish the correct diagnosis before treatment is considered.

Common Symptoms of a Uterine Septum

Many people with a uterine septum have no symptoms and may never know they have the condition unless imaging is performed.

When symptoms or reproductive concerns occur, they may include:

• Difficulty becoming pregnant
• Recurrent pregnancy loss
• Pregnancy complications
• Preterm delivery in some pregnancies
• Breech presentation
• Occasionally painful menstrual periods or pelvic discomfort

Because these symptoms can also occur with other reproductive conditions, a comprehensive fertility evaluation is often recommended before attributing infertility or pregnancy loss solely to a uterine septum.

Uterine Septum & Fertility

The relationship between a uterine septum and fertility is complex. Many patients with a uterine septum conceive naturally without difficulty, while others experience infertility or recurrent pregnancy loss. The exact reason a septum affects reproduction in some individuals but not others remains an area of ongoing research.

Several theories have been proposed. Depending on its size and location, a uterine septum may:

• Reduce the normal space available for embryo implantation.
• Alter blood supply within the uterine cavity.
• Change the shape of the endometrial cavity.
• Influence early placental development.

Because fertility depends on many interacting factors, fertility specialists evaluate a uterine septum alongside ovarian reserve, ovulation, sperm health, age, and overall reproductive history before recommending treatment.

Uterine Septum & Pregnancy

Many patients with a uterine septum have healthy pregnancies. However, research suggests that some uterine septa may be associated with an increased risk of miscarriage, preterm birth, abnormal fetal position, or other obstetric complications.

The degree of risk varies depending on the size and characteristics of the septum as well as the individual’s pregnancy history. Patients with previous pregnancy loss or pregnancy complications may receive different recommendations than someone who has never attempted pregnancy.

For individuals planning pregnancy after a diagnosis of uterine septum, discussion with both a reproductive endocrinologist and, when appropriate, an obstetric provider can help guide individualized care.

How a Uterine Septum Is Diagnosed

Diagnosis usually begins during fertility evaluation or investigation of recurrent pregnancy loss. Because distinguishing a uterine septum from other congenital uterine differences is important, physicians often use more than one imaging technique.

Diagnostic evaluation may include:

• Transvaginal ultrasound
• Three-dimensional (3D) ultrasound
• Saline infusion sonography (saline sonogram)
• Magnetic resonance imaging (MRI)
• Hysteroscopy

These studies help physicians evaluate both the inside and outside shape of the uterus, allowing them to distinguish a uterine septum from other congenital uterine anomalies that may require different management.

Uterine Septum Treatment Options

Not every uterine septum requires treatment. Recommendations depend on an individual’s reproductive history, pregnancy goals, symptoms, and the size and characteristics of the septum. Many patients with a uterine septum have healthy pregnancies without intervention, while others may benefit from treatment after experiencing infertility, recurrent pregnancy loss, or pregnancy complications.

When treatment is considered, fertility specialists weigh the potential benefits against the risks of surgery and develop recommendations based on the patient’s complete reproductive history rather than the imaging findings alone.

Treatment options may include:

• Observation without surgery for patients who have no reproductive concerns
• Monitoring during future pregnancies when appropriate
• Hysteroscopic septum resection for selected patients
• Comprehensive fertility evaluation when additional infertility factors may be present

For patients who have experienced recurrent pregnancy loss or infertility that may be related to a uterine septum, hysteroscopic correction may be recommended after careful evaluation.

Hysteroscopic Septum Resection

Hysteroscopic septum resection is the most common surgical treatment for a uterine septum. During the procedure, a physician inserts a thin camera called a hysteroscope through the cervix into the uterus and carefully removes the septum without making external incisions.

Because the procedure is performed entirely through the cervix, recovery is generally quicker than recovery from abdominal surgery. Most patients return home the same day.

The primary goals of hysteroscopic septum resection are to:

• Create a single, normally shaped uterine cavity.
• Improve the environment for embryo implantation.
• Reduce pregnancy-related complications in appropriately selected patients.
• Support future reproductive outcomes when a septum is believed to contribute to infertility or pregnancy loss.

Not every patient with a uterine septum is a candidate for surgery. Decisions regarding hysteroscopic treatment should be individualized and based on current evidence, reproductive history, and discussion with a fertility specialist.

Recovery After Septum Surgery

Recovery following hysteroscopic septum resection is typically brief. Many patients return to normal daily activities within several days, although recovery recommendations vary depending on the individual procedure and any additional treatment performed.

Your physician may recommend:

• A short period of pelvic rest
• A follow-up examination or imaging study
• Waiting a recommended period before attempting pregnancy
• Additional fertility treatment when appropriate

Most patients experience mild cramping or light spotting following the procedure, although recovery varies from person to person.

When to See a Fertility Specialist

A uterine septum is often discovered during fertility evaluation or after recurrent pregnancy loss. Consultation with a reproductive endocrinologist can help determine whether the septum is likely contributing to reproductive challenges and whether treatment may be beneficial.

You may benefit from seeing a fertility specialist if you:

• Have been trying to conceive without success.
• Have experienced recurrent pregnancy loss.
• Have been diagnosed with a uterine septum during imaging.
• Are preparing for IVF or embryo transfer.
• Have questions about how a congenital uterine difference may affect future pregnancy.

A comprehensive fertility evaluation considers much more than the uterine septum itself. Your physician will also evaluate ovarian reserve, ovulation, sperm health, age, reproductive history, and other factors that may influence fertility and pregnancy outcomes.

At Spring Fertility, our board-certified reproductive endocrinologists develop individualized treatment plans based on each patient’s reproductive goals, medical history, and diagnostic findings. Whether treatment involves observation, surgery, fertility treatment, or continued monitoring, recommendations are designed to support informed decision-making and the best possible reproductive outcomes.

Common Questions About a Uterine Septum

What is a uterine septum?

A uterine septum is a congenital difference in uterine development in which a band of fibrous or muscular tissue partially or completely divides the uterine cavity. It is present before birth and may vary considerably in size.

Is a uterine septum a birth defect?

Yes. A uterine septum is a congenital uterine anomaly, meaning it develops during fetal development before birth. Many people are unaware they have a uterine septum until fertility evaluation or pregnancy-related testing is performed.

Can you get pregnant with a uterine septum?

Yes. Many people with a uterine septum conceive naturally and have healthy pregnancies. However, some patients may experience infertility, recurrent pregnancy loss, or pregnancy complications depending on the size and characteristics of the septum.

Can a uterine septum cause infertility?

A uterine septum may contribute to infertility in some patients, although many people with a septate uterus have no difficulty conceiving. Fertility specialists evaluate the uterine septum alongside ovarian reserve, ovulation, sperm health, age, and other reproductive factors before determining whether it is likely affecting fertility.

Can a uterine septum cause miscarriage?

Research suggests that some uterine septa are associated with an increased risk of miscarriage. The degree of risk varies depending on the characteristics of the septum and the individual’s reproductive history.

Can a uterine septum affect IVF?

Depending on its size and location, a uterine septum may interfere with embryo implantation or pregnancy during IVF. Fertility specialists may recommend evaluation or treatment before embryo transfer in appropriately selected patients.

How is a uterine septum diagnosed?

A uterine septum is commonly diagnosed using three-dimensional ultrasound, saline infusion sonography (saline sonogram), MRI, or hysteroscopy. These imaging studies help physicians evaluate both the inside and outside shape of the uterus.

What is the difference between a uterine septum and a bicornuate uterus?

Although these conditions may appear similar, they develop differently. A uterine septum has a normal outer uterine shape with tissue dividing the uterine cavity, whereas a bicornuate uterus has a heart-shaped outer contour resulting from incomplete fusion of the Müllerian ducts. Because treatment differs, accurate diagnosis is important.

Does every uterine septum need surgery?

No. Many patients do not require treatment. Surgery is generally considered when a uterine septum is believed to contribute to infertility, recurrent pregnancy loss, or other reproductive complications. Recommendations are individualized based on reproductive history and fertility goals.

What is hysteroscopic septum resection?

Hysteroscopic septum resection is a minimally invasive procedure performed through the cervix using a hysteroscope. The surgeon removes the tissue dividing the uterine cavity without making abdominal incisions, allowing the uterus to retain a more typical cavity shape.

Does surgery improve fertility?

For selected patients, hysteroscopic septum resection may improve reproductive outcomes. Whether surgery is recommended depends on an individual’s reproductive history, pregnancy history, and the characteristics of the uterine septum. Your fertility specialist can discuss the potential benefits and risks in your specific situation.

How long does recovery take after septum surgery?

Recovery is generally brief. Most patients return to normal daily activities within several days, although recovery recommendations vary depending on the procedure and the individual’s medical history.

Can I have a healthy pregnancy after septum surgery?

Many patients go on to have healthy pregnancies following hysteroscopic septum resection. Pregnancy outcomes depend on numerous factors beyond the uterine septum itself, including age, embryo quality, ovarian reserve, and overall reproductive health.

Will a uterine septum come back after surgery?

Recurrence is uncommon, although follow-up imaging may be recommended after surgery to confirm normal healing of the uterine cavity.

When should I see a fertility specialist about a uterine septum?

You should consider consulting a fertility specialist if you have been diagnosed with a uterine septum and are having difficulty becoming pregnant, have experienced recurrent pregnancy loss, are preparing for IVF, or have questions about how a congenital uterine difference may affect future pregnancy. A comprehensive fertility evaluation can help determine whether treatment is appropriate for your individual circumstances.