Vaginal and Vulval Cysts
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Direct answer
Vaginal and vulval cysts are mostly benign, and site usually identifies the type. Gartner duct cysts lie on the anterolateral vaginal wall, usually in the upper vagina, Bartholin cysts sit in the posterolateral vestibule at the 4 and 8 o'clock positions, and inclusion cysts follow trauma or surgery. Most are small and asymptomatic. Symptomatic or large cysts are excised or marsupialised, and women over 40 with a Bartholin swelling need biopsy.
What you must remember
- Gartner duct cyst: a remnant of the mesonephric duct on the anterolateral vaginal wall, usually the upper vagina, and typically asymptomatic and excised only if large or painful.
- Bartholin cyst: formed by obstruction of the gland duct, causing a painful unilateral swelling in the posterolateral vestibule.
- Inclusion cyst: squamous epithelium buried in the wall after episiotomy, childbirth or vaginal surgery, lined by squamous epithelium.
- Mucous cyst: mucus-filled, arising from vaginal glandular remnants, typically small and often found incidentally.
- Malignancy caution: biopsy a Bartholin swelling in women over 40, or one that persists after treatment, to exclude adenocarcinoma.
- Differential: urethral diverticulum (anterior wall, near the meatus) and Skene gland cysts must be separated from Gartner cysts.
- Management: observe small asymptomatic cysts; drain an abscess; use a Word catheter or marsupialisation for recurrent Bartholin cysts.
Locating the cyst before naming it
A woman has a painless lump in the vaginal wall, found on routine pelvic examination. Its wall, position and relation to the introitus narrow the diagnosis more than its size does.
| Cyst | Origin | Typical site | Usual management |
|---|---|---|---|
| Gartner duct | Mesonephric duct remnant | Anterolateral vagina, usually upper part | Observe; excise if large or symptomatic |
| Bartholin | Obstructed gland duct | Posterolateral vestibule, 4 and 8 o'clock | Drain or marsupialise; excise if recurrent |
| Inclusion | Trapped squamous epithelium after trauma or surgery | Any vaginal wall | Excise if symptomatic |
| Mucous | Glandular remnants, mucus-filled | Vaginal wall | Observe or excise |
Site and lining are the two clues that separate these lesions in a vignette. Persistent or solid lesions in older women shift the emphasis from benign management to tissue diagnosis. Examiners expect the candidate to name the cyst from its location before naming its treatment. Gartner and Bartholin cysts are rarely confused once the site is established, which is why the table orders them by location.
Where the exam tries to catch you
Cyst questions usually test site, origin and the single age-linked caution.
- Trap: calling a Bartholin swelling in a 45-year-old a simple cyst Correct: biopsy it, because adenocarcinoma of the gland, though rare, must be excluded in women over 40.
- Trap: confusing a Gartner cyst with a urethral diverticulum Correct: Gartner cysts lie in the anterolateral wall, usually in the upper vagina, while a urethral diverticulum is midline beneath the urethra and may discharge pus on pressure.
- Trap: excising every vaginal cyst Correct: most are asymptomatic and observed, with surgery reserved for symptoms, size or recurrence.
Frequently asked questions
Where is a Gartner duct cyst found?
Gartner duct cysts are found on the anterolateral wall of the vagina, usually in its upper part. They arise from remnants of the mesonephric (Wolffian) duct. Most are small and asymptomatic, although a large cyst can cause discomfort or dyspareunia.
What is the usual site of a Bartholin cyst?
Bartholin gland cysts lie in the posterolateral vestibule, at the 4 and 8 o'clock positions. They form when the gland duct is obstructed, causing a painful unilateral swelling. Marsupialisation or a Word catheter is used for recurrent cysts.
When should a Bartholin cyst be biopsied?
A Bartholin cyst should be biopsied in women over about 40, or when it persists after treatment, to exclude adenocarcinoma. Any solid, ulcerated or atypical lesion also needs tissue diagnosis. Small asymptomatic cysts in younger women do not need biopsy.
How do inclusion cysts form in the vagina?
Inclusion cysts form when squamous epithelium is buried in the vaginal wall after trauma, episiotomy, childbirth or surgery. They are lined by squamous epithelium and may enlarge slowly. Excision is performed only if the cyst becomes symptomatic.
How is a painful Bartholin abscess managed?
A painful Bartholin abscess is first managed with incision and drainage, with antibiotics added if there is surrounding cellulitis. A Word catheter or marsupialisation is then used to reduce recurrence. Abscess drainage relieves pain quickly in most women.