Ovarian Cysts

What are Ovarian Cysts?

An ovarian cyst is a fluid-filled sac that develops within or on the surface of an ovary. Women have two ovaries, located on either side of the uterus. These almond-shaped organs store and release eggs each month during the reproductive years.

Ovarian cysts are common, particularly in women of childbearing age. In most cases, they are harmless (benign), cause no symptoms, and resolve on their own within a few menstrual cycles. However, some cysts may grow larger, cause discomfort, affect menstrual cycles, or require medical treatment. Rarely, certain cysts may be cancerous, particularly in postmenopausal women.

Understanding the type of cyst and its behaviour is important for determining whether observation or treatment is indicated.

Impact of Ovarian Cysts on Anatomy and Health

Ovarian cysts can vary significantly in size and impact on health. Many cysts are benign and may resolve spontaneously without treatment. However, some can cause symptoms and complications, including:

• Asymptomatic Presence: Many ovarian cysts cause no symptoms and are found during routine pelvic exams.
• Pain: Larger cysts can cause pelvic pain—a dull or sharp ache in the lower abdomen on the side of the cyst. Sudden, severe pain can occur if a cyst ruptures or causes the ovary to twist (ovarian torsion).
• Menstrual Irregularities: Cysts can affect menstrual cycles, causing heavier or lighter periods, irregular periods, or spotting between periods.
• Bloating and Fullness: A larger cyst can cause a feeling of fullness or heaviness in your abdomen.

Complications may include:

• Rupture: Causing sharp pain and internal bleeding.
• Ovarian torsion: Twisting of the ovary, reducing blood supply and requiring urgent surgery.
• Fertility impact: Certain cysts linked to conditions such as endometriosis or polycystic ovary syndrome (PCOS) may affect ovulation.

Risk Factors for Ovarian Cysts

Several factors may increase the risk of developing ovarian cysts, including:

• Age: Ovarian cysts are most common in women of reproductive age.
• Hormonal imbalances: Ovarian cysts are more likely to occur in women with conditions that affect the levels of hormones, such as polycystic ovary syndrome (PCOS) or endometriosis.
• Family history: Women with a family history of ovarian cysts may be at an increased risk of developing them.
• Previous ovarian cysts: Women who have previously had ovarian cysts are at a higher risk of developing new ones.
• Lifestyle factors: Some lifestyle factors, such as obesity, a sedentary lifestyle, and a diet high in processed foods, may also increase the risk of developing ovarian cysts.

Causes Of Ovarian Cysts

Various factors, including hormonal imbalances, ovulation, and pelvic infections, can cause ovarian cysts.

Symptoms Of Ovarian Cysts

Many ovarian cysts do not cause symptoms and are found during routine pelvic exams or ultrasounds, but you should seek medical review if you experience the following:

• Abdominal pain or discomfort can range from mild to severe and can be sharp or dull. The pain may be on one side of the lower abdomen and accompanied by a dull ache in the lower back and thighs.
• Abnormal vaginal bleeding, spotting, or discharge.
• Pressure, bloating, or fullness in the abdomen.
• Difficulty emptying the bladder or bowel.
• Nausea or vomiting.
• Dizziness or lightheadedness.
• Sudden weight gain or swelling of the abdomen.

Preventing Ovarian Cysts

While it's not always possible to prevent ovarian cysts, certain measures can help reduce the risk:

• Regular Pelvic Examinations: Regular check-ups can help detect cysts early.
• Manage Hormonal Imbalances: Proper management of hormonal conditions like PCOS can help reduce the risk.
• Healthy Lifestyle: Maintaining a healthy weight, balanced diet, and regular exercise can help regulate hormones.
• Birth Control Pills: Oral contraceptives can help prevent the formation of new cysts in women who frequently develop them.

Types of Ovarian Cysts

There are several types of ovarian cysts, classified mainly as functional or pathological:

• Functional Cysts:
• Follicular Cysts: Form when the follicle doesn’t release the egg and continues to grow.
• Corpus Luteum Cysts: Develop if the follicle releases the egg but then doesn't dissolve and instead seals off and accumulates fluid.
• Pathological Cysts:
• Dermoid Cysts (Teratomas): Contain different types of tissues such as hair, skin, or teeth.
• Cystadenomas: Develop from ovarian tissue and can contain a watery or mucous fluid.
• Endometriomas: Form as a result of endometriosis when endometrial tissue attaches to the ovary.

Diagnosis of Ovarian Cysts

• Pelvic Examination: During a routine pelvic exam, a healthcare provider may feel a swelling or mass on an ovary, which can indicate a cyst.
• Ultrasound: A transvaginal ultrasound is the most common imaging test used to diagnose ovarian cysts. It uses sound waves to create an image of the ovaries and can help determine the cyst’s size, shape, and composition (whether it is filled with fluid, solid, or mixed).
• MRI or CT Scan: In some cases, a magnetic resonance imaging (MRI) or computed tomography (CT) scan may be used for a more detailed view of the cyst and surrounding tissues.
• Blood Tests: Blood tests, including the CA-125 test, can help determine if a cyst is likely to be cancerous, particularly in postmenopausal women. Elevated CA-125 levels can be a sign of ovarian cancer, but can also be elevated in benign conditions.
• Laparoscopy: In certain cases, a laparoscopy might be performed. This is a surgical procedure in which a thin tube with a camera (laparoscope) is inserted into the abdomen to view the ovaries and other pelvic organs directly.

Treatments for Ovarian Cysts

Treatment depends on the cyst’s size, appearance, symptoms, and patient age.

Conservative (Non-Surgical) Management

• Observation: Many simple cysts resolve within 1–3 months. A follow-up ultrasound may be recommended.
• Pain relief: Non-steroidal anti-inflammatory medications such as ibuprofen.
• Hormonal contraception: Birth control pills may reduce the formation of new functional cysts.

Surgical Management

Surgery may be recommended if:

• The cyst is large (typically over 5–10 cm)
• Persistent over several cycles
• Causing significant pain
• Suspicious for malignancy
• Occurring after menopause

Cystectomy

Cystectomy involves removing only the cyst while preserving the ovary when possible.

• Usually performed laparoscopically (keyhole surgery).
• Three to five small abdominal incisions are made.
• A camera (laparoscope) is inserted.
• Carbon dioxide gas expands the abdomen for better visibility.
• Surgical instruments remove the cyst.
• Performed under general anaesthesia.

This minimally invasive approach offers:

• Smaller scars
• Faster recovery
• Less postoperative pain
• Short hospital stay

In more complex cases, open surgery (laparotomy) may be required. Rarely, part or all of the ovary may need removal if the cyst replaces normal ovarian tissue.

Recovery After Ovarian Cyst Surgery

Recovery following laparoscopic cystectomy usually takes 1–2 weeks.

• Mild abdominal discomfort and bloating are common.
• Anti-inflammatory medications help manage pain.
• Light activity can resume within a few days.
• Heavy lifting should be avoided initially.

Most women retain normal ovarian function after cyst removal.

What if Ovarian Cysts are Untreated?

While many cysts resolve naturally, untreated large or symptomatic cysts may lead to:

• Ovarian torsion
• Rupture and internal bleeding
• Persistent pelvic pain
• Fertility complications
• Progressive growth
• Rarely, a delayed diagnosis of ovarian cancer

Regular monitoring reduces these risks.