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Women's Health

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Vaginal Cysts

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The human body isn't perfectly smooth. It's prone to developing various lumps and bumps. Cysts are just one type of growth many people get. These sac-like lumps are filled with fluid, air, or other materials. They're not usually harmful or painful.

Some cysts are so small that they can't be seen with the naked eye. Others can grow to the size of an orange.

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You can find cysts just about anywhere on the body, including the vagina. A vaginal cyst is usually located on or under the lining of the vagina.

There are several different types of vaginal cysts:

  • Inclusion cysts are one of the most common types of vaginal cysts. They are usually very small and located in the lower back of the vaginal wall.
  • Bartholin's gland cysts are fluid-filled cysts that form on the Bartholin's glands. These glands sit on either side of the opening to the vagina and produce the fluid that lubricates the vaginal lips (labia).
  • Gartner's duct cysts occur when ducts in a developing embryo don't disappear as they are supposed to after the baby is born. These remaining ducts can form vaginal cysts later in life.
  • Müllerian cysts are another common type of vaginal cyst that form from structures left behind when a baby develops. These cysts can grow anywhere on the vaginal walls and they often contain mucus.

Vaginal Cyst Causes

Vaginal cysts usually form when a gland or duct becomes clogged, causing liquid or another material to collect inside. The cause of a vaginal cyst depends on its type.

Inclusion cysts are caused by trauma to the vaginal walls. For example, women may get an inclusion cyst after they have an episiotomy (a surgical cut used to enlarge the vaginal opening during childbirth) or when they have surgery that damages the lining of the vagina.

Bartholin's gland cysts are caused when the opening to the Bartholin's gland becomes blocked -- such as by a flap of skin -- creating a fluid-filled growth. An abscess can result from a number of bacteria including those that cause sexually transmitted diseases such as gonorrhea or chlamydia. Bacteria normally found in the intestinal tract, such as E. coli, can also lead to Bartholin's abscesses.

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