Can a Bartholin Cyst Become Cancerous? Warning Signs

The short answer is that an ordinary, benign Bartholin cyst does not typically turn into cancer. However, a very rare type of cancer called Bartholin gland carcinoma may resemble a benign cyst or abscess, which can sometimes make it difficult to tell them apart without a medical evaluation ^[1][2].

Because the symptoms of these two conditions can overlap, it is important to know the difference between a typical cyst and a mass that requires a closer look by your doctor.

Understanding the Difference

Bartholin duct cysts and abscesses (infected cysts) are very common. Approximately 2% of women will develop one in their lifetime ^[3]. They occur when the duct of the Bartholin gland becomes blocked, causing fluid to back up and form a swollen bump.

In contrast, Bartholin gland carcinoma is extremely rare. It accounts for an estimated 3% to 7% of all vulvar cancers and makes up less than 1% of all cancers of the female reproductive system ^[1][2].

Medical research does not show that benign cysts routinely transform into cancer over time ^[1][2]. Instead, cancer in this gland usually develops on its own as a primary tumor (a cancer that starts in the gland itself). Because this tumor creates a lump near the opening of the vagina, it is frequently mistaken for a common cyst or abscess ^[4][1]. While data is mostly limited to small case series, some reports suggest that about half of these rare cancers are initially misdiagnosed as benign cysts, which can delay proper treatment ^[1][2].

Red Flags to Watch For

Most swellings in the Bartholin gland area are benign cysts or abscesses. However, certain features should prompt a timely evaluation by a gynecologist. Keep in mind that you cannot reliably self-diagnose these features—for example, severe infections can also cause firmness and swollen glands.

You and your doctor should be particularly vigilant if you notice:

• Age over 40 or after menopause: Bartholin gland cancer is more commonly diagnosed in women after menopause or over the age of 40 ^[2][5]. While a new swelling at this age is still most likely benign, it warrants prompt assessment ^[5][6].
• Firmness or being fixed in place: A typical cyst is usually soft and movable. A mass that feels hard or feels fixed (anchored) to the surrounding tissue requires evaluation ^[6][4].
• Irregular shape: Benign cysts are typically smooth and round. A lump with irregular, uneven edges is more concerning ^[6][2].
• Bleeding or skin changes: Unexpected bleeding or open sores on the skin over the lump are warning signs ^[7][8]. (Note: Some tumors do not cause sores, so a lack of sores does not rule out a problem ^[9]).
• Persistent or enlarging mass: If a presumed cyst continues to grow, does not heal, or repeatedly comes back after standard treatments like drainage, it needs further investigation ^[6][2].
• Swollen groin glands: Enlarged lymph nodes (glands) in the groin area alongside the vulvar mass can be a sign of a severe infection or, rarely, a more serious issue ^[6][4].

When to Seek Immediate Care for Infection

Patients often focus on the fear of cancer, but a Bartholin abscess (a severe infection of the cyst) is much more common and can become dangerous if ignored. Seek prompt or urgent medical care if you experience:

• Rapidly worsening or severe pain
• Fever or chills
• Spreading redness or warmth around the area
• Feeling systemically unwell
• Difficulty urinating due to the swelling

These are classic signs of an abscess, not necessarily cancer, but they require immediate medical attention for pain relief and infection control.

What to Expect at Your Appointment

If you have a persistent or unusual Bartholin swelling, a clinician needs to examine the area. Here is what the evaluation pathway generally involves:

• Physical Examination: Your doctor will take your medical history and perform a pelvic exam to check the size, firmness, and exact location of the mass.
• Infection Treatment: If it is clearly an abscess, they may perform a drainage procedure to relieve the pain and clear the infection.
• Biopsy or Tissue Removal: A visual exam cannot reliably rule cancer in or out. For women over the age of 40 with a new Bartholin mass, or anyone with a suspicious lump, guidelines recommend a low threshold for taking a tissue sample (biopsy) for laboratory testing ^[5][1]. Laboratory examination of the tissue is the only definitive way to diagnose or rule out cancer ^[5][2]. The exact procedure is individualized based on your age, symptoms, and exam findings.
• Imaging: Imaging is selected on a case-by-case basis. Your doctor might use an ultrasound to get a better look at an unusual cyst. MRI is not a routine test for a simple cyst; it is generally only ordered if a doctor strongly suspects a tumor and needs to map out its size before surgery ^[2][1]. Imaging does not replace a biopsy.

If a cyst persists, enlarges, or does not improve after treatment, do not observe it indefinitely. Having the area properly evaluated—and biopsied if your doctor recommends it—is the safest way to ensure you receive the right care for your specific situation.