What Is an Ovarian Cyst?
An ovarian cyst is a fluid-filled sac that develops inside or on the surface of the ovary. It is one of the most common gynecological findings, and in the vast majority of cases, it is benign and asymptomatic.
Ovarian cysts can occur at any age, but they are particularly common during reproductive years, as they are directly linked to the menstrual cycle. In most cases, they resolve on their own within a few weeks, without requiring any intervention.
Despite their frequency, ovarian cysts require monitoring by a specialist gynecologist, as certain types require treatment, and in rare cases—especially after menopause—they may indicate malignancy.
Types of Cysts
Not all ovarian cysts are the same. Understanding the type of cyst is crucial for choosing the appropriate treatment.
Functional Cysts
These are the most common type and occur as a natural result of the menstrual cycle. They are caused by changes in hormone levels and usually resolve on their own within 4 to 8 weeks. They have an average diameter of 3 to 5 centimeters and, in most cases, do not cause symptoms.
Endometriosis Cysts (Endometriomas)
They develop when endometriosis lesions are located on the ovaries. They are also known as chocolate cysts due to their characteristic appearance. Unlike functional cysts, they do not resolve on their own and require medical treatment. They can significantly affect fertility.
Benign Neoplastic Cysts
They are less common than functional cysts. The most common type is the dermoid cyst or cystic teratoma, which may contain various types of tissue. They are generally benign but usually require surgical removal.
Malignant Cysts
They account for a small percentage of ovarian cysts and occur most frequently after menopause. The distinction between benign and malignant cysts is made through a combination of ultrasound findings, laboratory tests, and clinical evaluation by a specialized gynecologist.
Ovarian Cysts and Polycystic Ovary Syndrome (PCOS)
Polycystic ovary syndrome (PCOS) is a condition that causes the development of many small follicles in the ovaries, which do not fully mature and do not lead to ovulation, as a result of a hormonal imbalance.
Despite superficial similarities, PCOS is a different condition from the ovarian cysts described on this page and requires a specialized diagnostic and therapeutic approach.
Recently, the syndrome has been renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS), which more accurately describes this condition.
Symptoms
Most ovarian cysts do not cause any symptoms and are discovered by chance during an annual gynecological ultrasound. However, when a cyst is large, ruptures, or affects blood flow to the ovary, symptoms may occur.
Common Symptoms
A feeling of pressure or heaviness in the abdomen, dull pain in the lower abdomen or lower back, bloating, pain during sexual intercourse, menstrual irregularities, frequent urination, and constipation.
Cyst Rupture
What happens if an ovarian cyst ruptures?
A ruptured cyst requires immediate medical attention. When a cyst ruptures, the fluid it contained spills into the abdominal cavity, causing sudden and severe pain. If there is a blood vessel in the cyst, bleeding may occur, requiring surgical intervention.
Rupture is most commonly seen in cysts larger than 5 centimeters, while strenuous exercise and vigorous sexual intercourse are believed to increase the risk.
Important: Any unusual symptom that persists for more than a few days should not be ignored. Timely evaluation by a specialized gynecologist is always preferable to waiting.
Diagnosis
Ovarian cysts are usually detected during a gynecological ultrasound, often without the woman having noticed any symptoms. The gynecologist evaluates the size, shape, and characteristics of the cyst to assess the type and degree of risk it poses.
In cases where malignancy is suspected, additional tests are recommended. A blood test for the CA-125 marker can be a useful diagnostic tool, though it should be noted that it is not a specific marker for ovarian cancer. For this reason, the result is always interpreted within the appropriate clinical context. In cases where more detailed imaging is required, the gynecologist may recommend an MRI.
Treatment
The treatment of ovarian cysts is individualized and depends on the type, size, symptoms, and age of the woman. There are three main options:
Monitoring
In most cases of functional cysts, the gynecologist recommends simple monitoring with follow-up ultrasounds. These cysts resolve spontaneously within 1 to 3 months without requiring any intervention.
Medication
In women with recurrent functional cysts, the gynecologist may recommend hormone therapy to inhibit the growth of new cysts and stabilize hormone levels.
Surgical Removal
When the cyst is large, causes symptoms, does not resolve with observation, or exhibits suspicious characteristics, surgical removal is recommended.
Laparoscopic cystectomy is the method of choice—a minimally invasive procedure that allows for the removal of the cyst while fully preserving healthy ovarian tissue. The patient is usually discharged from the hospital within 24 hours and returns to her daily activities in 1 to 2 weeks.
If malignancy is suspected during the procedure, a rapid biopsy is performed so that appropriate measures can be taken immediately based on the diagnosis.
Ovarian Cysts, Fertility & Pregnancy
The effect of an ovarian cyst on fertility depends largely on its type and size. Not all women with ovarian cysts have difficulty conceiving—in most cases of functional cysts, fertility is not affected.
When does a cyst affect fertility?
Endometriotic cysts (endometriomas) are most directly linked to reduced fertility, as they can affect egg quality and ovarian reserve. Large cysts of any type can also interfere with normal ovarian function or make ovulation difficult.
Ovarian cysts before in vitro fertilization
The presence of an ovarian cyst prior to an IVF protocol is carefully evaluated by the gynecologist. Depending on its type and size, it may affect the ovaries’ response to stimulation.
In some cases, the gynecologist will recommend its removal before starting the protocol, while in others, IVF can proceed with appropriate monitoring.
Ovarian Cyst During Menopause
The development of an ovarian cyst after menopause requires attention and a specialized evaluation. Since the ovaries no longer produce eggs after menopause and the menstrual cycle has ceased, the appearance of a cyst cannot be attributed to normal hormonal fluctuations, as is the case during reproductive age.
This does not mean that every postmenopausal cyst is dangerous. The vast majority remain benign; however, the risk of malignancy is relatively higher compared to younger women. For this reason, any cyst detected after menopause requires careful diagnostic evaluation, including a gynecological ultrasound, CA-125 testing, and, if deemed necessary, an MRI.
The decision to monitor or surgically remove the cyst is made based on the totality of diagnostic findings and always in consultation with the patient.
Frequently Asked Questions (FAQ)
Yes, in most cases of functional cysts, the body resolves the cyst on its own. They usually resolve spontaneously within 1 to 3 months. For this reason, the gynecologist often recommends follow-up with a repeat ultrasound before proceeding with any intervention. Endometriotic cysts and neoplastic cysts, however, do not resolve on their own and require medical treatment.
Yes, certain types of cysts can cause menstrual cycle irregularities, such as delayed or irregular periods, or heavy or painful menstruation. This occurs mainly when the cyst affects hormone levels. If you notice changes in your cycle that weren’t there before, it’s worth discussing this with your gynecologist.
Surgical removal is recommended when the cyst is large, does not resolve after 2 to 3 months of observation, causes severe symptoms, exhibits features suggestive of malignancy, or is detected after menopause. The decision is always made in consultation with the gynecologist based on the totality of diagnostic findings.
Yes, pain during sexual intercourse is one of the common symptoms that may be associated with an ovarian cyst, especially when the cyst is large or located in a specific area. If you experience new or worsening pain during sexual intercourse, a gynecological evaluation is recommended.
Yes, especially in the case of functional cysts and endometriotic cysts. A recurrence does not mean that the surgery was unsuccessful; it simply means that certain types of cysts tend to reappear due to the underlying cause that triggers them. For this reason, regular ultrasound monitoring after removal is essential.
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