Bartholin gland

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Bartholin Gland

Anatomy

The Bartholin glands (greater vestibular glands) are a pair of pea-sized mucus-secreting glands located posterolaterally in the vulva, between the hymen and the labia minora. Their ducts drain into the posterior vestibule at the 4 o'clock and 8 o'clock (or 5 and 7 o'clock) positions.

Figure: Normal anatomy (A) showing bilateral Bartholin glands at the posterior vestibule; (B) Bartholin gland abscess appearance. - Roberts and Hedges' Clinical Procedures in Emergency Medicine

The glands begin functioning at puberty, providing lubrication/moisture to the vestibule
They involute with age (postmenopausal women)
Histologically, the main duct is lined with stratified squamous epithelium, transitioning to transitional epithelium toward the terminal ducts; the gland itself produces mucus

Bartholin Duct Cyst

Pathogenesis: Obstruction of the duct (from trauma, inflammation, or edema) leads to accumulation of secretions and cyst formation. Cysts are typically sterile.

Clinical features:

Painless or mildly uncomfortable swelling at the posterior vestibule (4 or 8 o'clock)
Variable size - from small and asymptomatic to several centimeters
Small, asymptomatic cysts do not require treatment

Bartholin Gland Abscess

Pathogenesis: Retained secretions become infected, or obstruction is followed by superinfection. A pre-existing cyst need not be present - an abscess can develop de novo.

Microbiology:

Most commonly polymicrobial
E. coli is the single most common isolate
Neisseria gonorrhoeae and Chlamydia trachomatis are less common but important to consider
Culture is obtained but rarely changes initial management

Diagnosis:

Fluctuant, tender, hyperemic mass at the posterior introitus (4 or 8 o'clock position), developing over several days
Systemic symptoms (fever, chills) are rarely present
Ultrasound can confirm a discrete fluid collection when the diagnosis is unclear
If poorly defined, treat with broad-spectrum antibiotics + analgesics + warm sitz baths with close follow-up before drainage

Treatment

1. Incision and Drainage + Word Catheter (first-line)

The Word catheter is the standard approach for both cysts and abscesses. The goal is not just drainage but creation of a new epithelialized tract to allow ongoing gland drainage and prevent recurrence.

Procedure (Pfenninger & Fowler; Tintinalli; Roberts & Hedges):

Patient in dorsal lithotomy position
Local anesthesia: 2% lidocaine with epinephrine at the incision site (or pudendal block); IV opioids/sedation for very uncomfortable patients
Incision site: mucosal surface of the vestibule, just inside/lateral to the hymenal ring, where fluctuation is maximal - not the external skin
Stab incision with a #11 scalpel blade - just 3-5 mm (large enough for the Word catheter, no more)
Allow drainage; culture contents if indicated
Insert the Word catheter (similar in size to a #10 Foley, with a 1-inch stem and inflatable balloon) into the cavity
Inflate the balloon with 2-3 mL normal saline (not air)
Tuck the catheter stem into the vagina for comfort
Leave in place for 4-6 weeks to allow epithelialization of the new tract

Post-procedure: Analgesics, broad-spectrum antibiotics; targeted STI coverage if N. gonorrhoeae / C. trachomatis suspected.

2. Marsupialization (for recurrent cysts/abscesses)

Preferred for recurrences or when a Word catheter is unavailable/fails.

Procedure:

Lithotomy position; local anesthetic (2% lidocaine + epinephrine) or pudendal block; spinal/general anesthesia possible
Longitudinal fusiform incision 1-2 cm wide on the vaginal mucosa inside the hymenal ring
Excise an ellipse of the cyst wall; remove loculated portions; irrigate with normal saline
Suture the cyst wall edges to the mucosal edges with 4-0 Vicryl to create a permanent opening
Note: In patients >40 years, inspect excised tissue for signs of neoplasm - send for histology

3. Complete Excision

Reserved for recurrent gland disease not amenable to the above, or if malignancy is suspected. More morbid, with risk of scarring and hematoma.

Bartholin Gland Carcinoma

A rare but important consideration, especially in older women.

Epidemiology

Accounts for 2-7% of all vulvar malignancies
5x more common in postmenopausal than premenopausal women
Median age at presentation: ~57 years (younger than non-Bartholin vulvar carcinoma)

Histopathology

Because tumors may arise from the gland or from different parts of the duct, multiple histologic types occur:

Squamous carcinoma - most common (~88% in the MD Anderson series)
Adenocarcinoma
Adenoid cystic carcinoma (~15% of Bartholin carcinomas) - slow-growing, perineural infiltration, marked local recurrence tendency, less lymph node metastasis, better overall prognosis
Rarely: transitional cell, adenosquamous

Honan's criteria for classifying a tumor as Bartholin gland carcinoma:

Tumor in the correct anatomic position
Located deep in the labium majus
Overlying skin is intact
Some recognizable normal gland tissue present

(Strict adherence leads to underdiagnosis - large tumors may ulcerate through skin)

Signs and Symptoms

Most common presentation: vulvar mass or perineal pain
~10% have a prior history of Bartholin gland inflammation
Malignancy is frequently mistaken for benign cysts or abscesses, leading to diagnostic delay
Key rule: Biopsy is indicated for any solid component within a Bartholin cyst or abscess, and for any cyst/abscess that fails to respond to treatment - Berek & Novak's Gynecology

Treatment

Historically: radical vulvectomy with bilateral groin and pelvic node dissection
Current approach (individualized): hemivulvectomy or radical local excision for the primary tumor
- Pelvic node dissection only if groin nodes are positive
- Extensive dissection in the ischiorectal fossa is required; margins are often close
Postoperative radiation significantly reduces local recurrence (27% → 7%)
If tumor is fixed or involves adjacent structures (anal sphincter, rectum): preoperative chemoradiation followed by limited surgery
Radiation/chemoradiation alone: 3- and 5-year survival rates of 72% and 66%, respectively

Prognosis

Due to deep location, disease tends to present at a more advanced stage than squamous vulvar carcinoma
Stage for stage, however, prognosis is similar to other vulvar carcinomas
At the MD Anderson Cancer Center, Bartholin gland carcinoma patients had higher rates of stage III/IV disease (61% vs. 36%) but no significant difference in recurrence-free or overall survival compared with non-Bartholin vulvar carcinoma

Clinical Pearls

Feature	Detail
Location	4 and 8 o'clock (posterior vestibule)
Normal size	Pea-sized; not palpable
Cyst vs abscess	Cyst = duct obstruction (sterile); abscess = infected (polymicrobial)
Most common organism	E. coli
Word catheter duration	4-6 weeks
Malignancy risk	Higher in women >40; biopsy any solid mass or treatment failure
Carcinoma frequency	2-7% of vulvar malignancies
Most common carcinoma type	Squamous (~88%)
Adenoid cystic variant	Perineural invasion, local recurrence, better prognosis than other types

Sources:

Tintinalli's Emergency Medicine: A Comprehensive Study Guide
Pfenninger and Fowler's Procedures for Primary Care, 3rd ed.
Roberts and Hedges' Clinical Procedures in Emergency Medicine
Berek & Novak's Gynecology
Textbook of Family Medicine, 9th ed.

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