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Within the realm of women’s health, the terms “fibroids” and “cysts” are often mentioned in passing, and sometimes, occur concurrently. While they may sound similar, fibroids and cysts are entirely different in nature — one is a solid tumour-like growth in the uterus, while the other is a fluid-filled sac that develops in the ovaries. 

The confusion often comes from the fact that both can develop silently, without obvious symptoms, or they can cause discomfort, changes in menstrual patterns, and, in some cases, complications.

In this article, we’ll break down everything you need to know about uterine fibroids and ovarian cysts — their differences, symptoms, diagnosis, and treatment options — so that you can make informed decisions about your health. Whether you’re facing a recent diagnosis, dealing with unexplained symptoms, or simply want to be proactive about your gynaecological health, understanding these conditions can empower you to take control of your well-being.

What Are Uterine Fibroids?

Uterine fibroids are noncancerous growths that develop in or on the uterus, which affect many women at some point in their lives. These growths — also known as leiomyomas or myomas — are composed of muscle and fibrous tissue and can vary greatly in size. Some remain as small as a seed, while others can grow large enough to distort the shape of the uterus.

Although the vast majority of fibroids are benign, their impact ranges from unnoticed to significantly disruptive. Some women may have fibroids without experiencing symptoms, while others may struggle with severe menstrual bleeding, period cramps, or even fertility complications. Whether the fibroids result in significant symptoms depend on both their sizes and locations.

Types of Uterine Fibroids

Uterine Fibroids Singapore
Uterine fibroids are noncancerous, solid tumours made of muscle and fibrous tissue that develop within or on the uterus, which may cause symptoms such as heavy menstrual bleeding, period cramps, and pressure on surrounding organs.

The location of fibroids within the uterus plays a key role in how they affect the body. The three primary types are:

Common Symptoms of Uterine Fibroids

While some fibroids remain asymptomatic, others can cause a range of symptoms depending on their size and location. The most common signs include:

For many women, fibroids remain a silent condition, only discovered during routine gynaecological exams or health screening checks. However, if you experience symptoms that begin to interfere with daily life, it’s best to consult your gynaecologist for early diagnosis and management.

What Are Ovarian Cysts?

Ovarian cysts are fluid-filled sacs that develop in or on the ovaries. They are a common occurrence in women of reproductive age and, in many cases, remain harmless, causing no symptoms and disappearing on their own. However, some cysts grow larger, persist, or cause discomfort, leading to concerns about their impact on reproductive health and overall general health/ well-being.

Unlike uterine fibroids (which are solid growths of muscle and fibrous tissue), ovarian cysts are usually filled with fluid and can form due to various reasons. While most are benign, certain types may indicate underlying conditions that require medical intervention.

Types of Ovarian Cysts

Ovarian cysts are broadly classified into two main categories:

Ovarian cysts are fluid-filled sacs that develop in or on the ovaries, often resulting from hormonal changes or ovulation, sometimes causing pelvic pain, bloating, or menstrual irregularities.

Common Symptoms of Ovarian Cysts

Many ovarian cysts remain asymptomatic and are only discovered during routine pelvic examinations. However, when they become problematic, they can cause a variety of symptoms, including:

In rare cases, an ovarian cyst may rupture, bleed or become twisted (ovarian torsion). These situations require immediate medical attention. In cases of acute, severe pain, which can sometimes also be associated with nausea, fever etc, particularly if one has a known history of ovarian cyst, it is recommended to get evaluated at the nearest Accident and Emergency Department as urgent surgical intervention may sometimes be required before irreversible ovarian function loss occurs. 

Cysts And Fibroids Are Vastly Different

Although both are common gynaecological conditions, they differ in structure, location, and how they affect the body. Fibroids are solid growths that develop in or on the uterus, while cysts are fluid-filled sacs that form in or on the ovaries. Their causes, symptoms, and treatment approaches also vary.

While some women may have both conditions at the same time, proper diagnosis through medical evaluation is essential to determine the most ideal course of action for managing symptoms and maintaining reproductive health. 

The table below provides a clear comparison to help differentiate between the two:

FeatureFibroidsOvarian Cysts
LocationDevelop in or on the uterusForm in or on the ovaries
CompositionSolid, dense growths made of muscle and fibrous tissue(Mostly) Fluid-filled sacs
CausesHormonal factors, genetics, and growth factorsOften linked to the menstrual cycle or hormonal imbalances
Common SymptomsHeavy menstrual bleeding, pelvic pain, pressure symptoms such as frequent urination, constipationBloating, irregular periods, pelvic pain, pain during intercourse
Growth PatternCan grow gradually over time, sometimes reaching large sizes; does not resolve on their own. Typically stops growing when one reaches menopause and can start shrinking. Can appear and disappear quickly, often resolving on their own
Impact on MenstruationCauses prolonged or heavy periodsCan lead to irregular menstrual cycles
Potential ComplicationsMay press on surrounding organs, leading to discomfort and fertility issuesMay rupture or cause ovarian torsion, leading to sudden pain

While fibroids tend to develop slowly and may grow large before causing noticeable symptoms, ovarian cysts often come and go undetected. However, both conditions require medical evaluation if they cause persistent discomfort, affect menstrual cycles, or lead to fertility concerns.

Are Cysts or Fibroids Cancerous?

Most fibroids and cysts are benign, non-cancerous growths. In fact, many ovarian cysts resolve on their own, especially in premenopausal women. 

However, in rare cases, certain forms of cysts, like complex ovarian cysts or rapidly growing fibroids, may raise some concern for malignancy. This is why it’s important to monitor these growths through regular check-ups with your doctor. 

How Are Fibroids and Cysts Diagnosed? 

The first step to treating your condition starts with an understanding of your condition. An accurate diagnosis is essential for distinguishing between fibroids and ovarian cysts, as their symptoms can sometimes overlap. While some women may not experience any noticeable signs, others may struggle with persistent pelvic pain, abnormal bleeding, or changes in their menstrual cycle. 

Medical History and Physical Examination

Your gynaecologist may ask about:

A physical examination, including a pelvic exam, helps detect any abnormalities in the uterus or ovaries. If a mass is present, further imaging tests are usually recommended to confirm the diagnosis and assess its characteristics.

Imaging Tests

To accurately identify whether a growth is a fibroid or a cyst, healthcare providers rely on imaging tests, including:

Early detection helps prevent complications and allows for timely medical intervention for your symptoms. 

How Do You Treat Fibroids and Cysts? 

The management of fibroids and ovarian cysts depends on their size, symptoms, and potential complications. While many cases require only monitoring, others may need medical or surgical intervention. Below are the primary treatment approaches for both conditions.

Treatment for Fibroids

Not all fibroids require immediate treatment—many are small, asymptomatic, and discovered incidentally during routine gynaecological exams. For those that cause symptoms, the following options are available:

Treatment for Ovarian Cysts

Many ovarian cysts, particularly functional cysts, resolve on their own within a few menstrual cycles. However, when cysts persist, grow larger, or cause severe symptoms, treatment may be necessary.

Surgical intervention for an ovarian cyst has the potential to reduce one’s ovarian reserve and hence proper preoperative counseling is necessary for you to understand the implications of surgery and whether or not it is necessary for your case. 

When to Visit a Gynaecologist

While many cases of fibroids and ovarian cysts do not cause serious issues, certain symptoms indicate the need for prompt medical evaluation. Seek immediate medical attention if you experience:

Summary

Fibroids and ovarian cysts are two of the most common gynaecological conditions, yet they remain widely misunderstood. Many women only learn about them after experiencing symptoms like pelvic pain, heavy bleeding, or irregular periods. Others may have them without knowing, as these growths can sometimes develop silently. While fibroids and cysts share some similarities, they are fundamentally different in structure, causes, and the way they affect reproductive health.

Hopefully this quick guide helped shed some light on their differences, what to expect for each condition, and when to seek medical attention. If you’re experiencing unexplained pelvic pain, irregular periods, or other concerning symptoms, it is imperative to seek a gynaecologist’s opinion for a detailed diagnosis and personalised treatment plan.

References

  1. Intramural fibroid: Symptoms, diagnosis, and treatment. (2018, April 17). Healthline. https://www.healthline.com/health/intramural-fibroid 
  2. What is a submucosal fibroid? (n.d.). Verywell Health. Retrieved March 20, 2025, from https://www.verywellhealth.com/submucosal-fibroid-5187130 
  3. What is a subserosal fibroid? (n.d.). Verywell Health. Retrieved March 20, 2025, from https://www.verywellhealth.com/subserosal-fibroid-5187129
  4. Zhang, M., Cheng, S., Jin, Y., Zhao, Y., & Wang, Y. (2021). Roles of CA125 in diagnosis, prediction, and oncogenesis of ovarian cancer. Biochimica et Biophysica Acta (BBA) – Reviews on Cancer, 1875(2), 188503. https://doi.org/10.1016/j.bbcan.2021.188503 
  5. Uterine fibroids: Learn More – When is treatment with hormones considered? (2021). In InformedHealth.org [Internet]. Institute for Quality and Efficiency in Health Care (IQWiG). https://www.ncbi.nlm.nih.gov/books/NBK279532/ 
  6. Uterine fibroid embolization. (2024, March 15). https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/uterine-artery-embolization 
  7. Lerardi AM, Savasi V, Angileri SA, Petrillo M, Sbaraini S, Pinto A, Hanozet F, Marconi AM, Carrafiello G. Percutaneous High Frequency Microwave Ablation of Uterine Fibroids: Systematic Review. Biomed Res Int. 2018 Jan 8;2018:2360107. doi: 10.1155/2018/2360107. PMID: 29511672; PMCID: PMC5817312.
  8. Abdullah, B., Subramaniam, R., Omar, S., Wragg, P., Ramli, N., Wui, A., Lee, C., & Yusof, Y. (2010). Magnetic resonance-guided focused ultrasound surgery (Mrgfus) treatment for uterine fibroids. Biomedical Imaging and Intervention Journal, 6(2), e15. https://doi.org/10.2349/biij.6.2.e15 
  9. Oophorectomy: Purpose, surgery, risks & recovery. (n.d.). Cleveland Clinic. Retrieved March 20, 2025, from https://my.clevelandclinic.org/health/treatments/17800-oophorectomy 

This article focuses on surgical treatment of endometriosis. Click here to find out about what endometriosis is, its symptoms and diagnosis.

How is endometriosis treated?

This depends on how severe your symptoms are, the stage of endometriosis, and your fertility plans. Endometriosis is a long-term condition. There is no cure and multiple surgeries are not recommended.. The aim of treatment is to achieve surgical clearance at the most appropriate time, with hormonal medicines before and after that to suppress endometriosis.

Surgery

Surgery is usually recommended for cases of advanced endometriosis with severe symptoms, or for women who wish to conceive soon but have difficulty getting pregnant. Depending on severity, a pre-operative MRI and a colorectal surgeon may need to be involved with your surgery. 

Laparoscopy (keyhole) surgery under general anaesthesia allows for removal of endometriosis – this usually involves a 1cm cut in your umbilicus and three to four 0.5cm cuts in your abdomen. A laparoscope (camera) is inserted through your umbilicus and the extent of endometriosis determined. If there are endometriotic or “chocolate”/”blood” cysts in your ovaries, these will be removed (ovarian cystectomy). Endometriotic deposits in your pelvis will also be excised. Rarely, in severe cases where there is deep infiltrating endometriosis, the colorectal surgeon may need to perform shaving of endometriosis from the bowel or bowel resection (removing the section of bowel that has been affected by endometriosis).

If you are planning for pregnancy, additional procedures such as hysteroscopy to check your uterine cavity, hydrotubation (a dye test to check patency of your fallopian tubes) and ovariopexy (fixing your ovaries low down in the pelvis for better access during egg collection for in-vitro fertilisation) may be recommended. 

Laparoscopic surgery for endometriosis is technically challenging due to long-term inflammation and scarring that the condition has caused – this usually results in adhesions between the intestines and pelvic organs. Anti-adhesion barriers (special bio-compatible materials) are typically placed at the end of the surgery to reduce the risk of adhesion reforming. In some cases, a laparoscopic procedure may need to be converted to a laparotomy (open) surgery. You will need to be hospitalised after the operation as it is a major surgery. Do discuss with your doctor who will be able to advise you on the risks of surgery in your specific case, and what to expect. 

Hormonal medications to suppress endometriosis will need to be taken long-term, even if surgery has been done to clear endometriosis, unless you are trying to get pregnant, are pregnant or have reached menopause.

Photo credit: BruceBlaus / Wikimedia Commons

Do I have PMS?

PMS refers to physical and emotional symptoms that affect your life 2 weeks before your period comes. These usually improve when your period starts and generally disappear by the time your period ends. PMS is usually linked to your body’s hormonal changes.

What are the symptoms of PMS?

Symptoms vary vastly depending on the woman. They include:

You should record your symptoms in a diary for at least 2-3 months to track their pattern, and see a gynaecologist if you find that your symptoms are worsening and/or interferes with your daily life.

What are the treatment for PMS?

There are many good ways to keep your symptoms under control so that your life does not revolve around your period. Some treatment options include:

Why do I have bad menstrual cramps?

Menstrual cramps are lower abdominal aches and pains which many women may experience just before or during their periods. The pain can extend to your lower back, hips and inner thighs. Menstrual cramps occur because of uterine contractions during your period – strong contractions can cut off oxygen supply to your uterus and causes pain.

Bad or severe menstrual cramps may last throughout the period or linger on even when the period is over. Associated symptoms may include heavy periods, upset stomach, vomiting or loose stools.

If you have bad menstrual cramps that persist and is not relieved by normal painkillers, do see your gynaecologist as it may be a sign of something wrong.

What are some causes of bad menstrual cramps?
What tests do I need?

Your gynaecologist will take a detailed medical history and perform a pelvic examination to check your cervix and uterus. Depending on your symptoms, you may require an ultrasound scan, vaginal swabs or blood tests.

How to treat bad menstrual cramps?

This depends on what the cause of your cramps is. You should speak to your gynaecologist about the treatment options suitable for your condition. These may include:

This article focuses on medical treatment of endometriosis. Click here to find out about what endometriosis is, its symptoms and diagnosis.

How is endometriosis treated?

This depends on how severe your symptoms are, the stage of endometriosis, and your fertility plans. Endometriosis is a long-term condition. There is no cure and multiple surgeries are not recommended. The aim of treatment is to achieve surgical clearance at the most appropriate time, with hormonal medicines before and after that to suppress endometriosis.

Medical treatment

These suppress the symptoms of endometriosis and slow down its disease progression (i.e. slows down the deposit of endometriosis outside the uterus). They are hormones which need to be taken long-term, even if surgery has been done to clear endometriosis, unless you are trying to get pregnant, are pregnant or have reached menopause. This is because endometriosis is thought to be related to backflow of menstrual blood every month, leading to tissue from the womb lining being found outside the womb. This means that endometriosis has a high chance of recurring even after surgical clearance has been done if suppressive medications are not taken post-operatively.

Common options include:

Other forms may include progestogens in the form of injections – your doctor will discuss with you if you are suitable for it.

If you have advanced endometriosis with severe symptoms, or wish to conceive soon but have difficulty getting pregnant, you may require surgery.

Is my period long?

A normal period has bleeding that generally lasts between 3 to 7 days. Anything that goes beyond that is considered a prolonged period. 

What can cause long periods?
When should I be concerned?

See your gynaecologist if you experience more than a few months of long periods, or have associated symptoms like heavy periods, bleeding in between periods, bleeding after sex, or bleeding after menopause.

What tests do I need?

Your gynaecologist will take a detailed medical history and perform a pelvic examination to check your cervix and uterus. Depending on your symptoms, you may require an ultrasound scan, pregnancy test, Pap smear/HPV test, vaginal swabs, biopsy of the womb lining, or blood tests.

Is there treatment for long periods?

Treatment depends on the cause for your long periods. If the cause is due to certain hormonal medications you are on and your tests return negative, you may not need to do anything if the flow is light. Discuss with your gynaecologist about the appropriate options for you.

What is chronic pelvic pain?

This refers to pain in the pelvis that lasts for 6 months or longer. In many cases there is no single cause for chronic pelvic pain, and the goal is pain management and improving one’s quality of life. 

What are the symptoms of chronic pelvic pain?

Symptoms vary vastly depending on the woman. They include:

You should see a gynaecologist if you find that your pain is worsening and/or interferes with your daily life.

What are the causes of chronic pelvic pain?

This is usually a complex entity – sometimes pain can be from several conditions at once. Some causes include:

What tests do I need?

Your gynaecologist will take a detailed medical history and perform a pelvic examination to check for a possible cause for your pain. 

Depending on your symptoms, you may require an ultrasound to check your uterus and ovaries, vaginal swabs to rule out sexually transmitted infections (STIs), urine tests to look for urinary tract infections, and/or bladder scan (to check the amount of urine remaining in your bladder after you have passed urine).

What is the treatment for chronic pelvic pain?

This depends on the cause. Finding a cause can be a long process and in some cases, a clear cause may not be found. Although there may not be a single cure available, communicating openly with your gynaecologist, pain specialist, family members and friends will enable you to find many good ways to keep your symptoms under control so that your life does not revolve around your pelvic pain.

Some treatment options include:

Read more on the treatment for endometriosis, bladder pain syndrome, pelvic inflammatory disease, uterine fibroids and adenomyosis. 

Remember that chronic pelvic pain is a chronic, long-term condition. Although there is no single cure available, there are many good ways to keep your symptoms under control so that your life does not revolve around your pain.

What is intermenstrual bleeding (IMB)?

This is bleeding or spotting that occurs in between your periods. Most women may experience this at some point. 

Why am I experiencing bleeding in between my periods?
When should I see my gynaecologist?
What tests do I need?

Your gynaecologist will take a detailed medical history and perform a pelvic examination to check your cervix and uterus. Depending on your symptoms, you may require an ultrasound scan, vaginal swabs, Pap smear/ HPV test, biopsy of the womb lining or blood tests.

How to treat IMB?

This depends on what the cause of your IMB is. You should speak to your gynaecologist about the treatment options suitable for your condition. These may include:

Why do I have bleeding after sex?

Bleeding after sex, or post-coital bleeding (PCB) can be fairly common, but should be checked out by a gynaecologist as it may be a sign of something wrong. Some causes include:

What tests do I need?

Your gynaecologist will take a detailed medical history and perform a pelvic examination to check your cervix and uterus. Depending on your symptoms, you may require an ultrasound scan, vaginal swabs, Pap smear/HPV test, biopsy of the womb lining or blood tests.

How to treat bleeding after sex?

This depends on what the cause is. You should speak to your gynaecologist about the treatment options suitable for your condition. These may include:

 

What is postmenopausal bleeding (PMB)?

This is bleeding or spotting that occurs after menopause. Menopause means that you have not had a period in a year or more. You should see your gynaecologist promptly if you experience this.

Why am I experiencing bleeding after menopause?

What tests do I need?

Your gynaecologist will take a detailed medical history and perform a pelvic examination to check your cervix and uterus. Depending on your symptoms, you may require an ultrasound scan, Pap smear/ HPV test, biopsy of the womb lining or blood tests.

How to treat PMB?

This depends on what the cause of your PMB is. You should speak to your gynaecologist about the treatment options suitable for your condition. These may include:

Dr. Ng Kai Lyn

MBBS (SG) | MMed (SG) | MRCOG (UK) | FAMS (SG)

Empowering Women's Health

This article has been medically reviewed by Dr Ng Kai Lyn
Dr Ng Kai Lyn 黄楷伶 is a Consultant Obstetrician and Gynaecologist with sub-specialty expertise in urogynaecology and minimally invasive surgery, as well as a clinical interest in fertility.
(65) 9152 4942
(65) 6635 2100
novena@astergynae.com

Let’s Talk to Dr. Ng Kai Lyn 黄楷伶

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