An anterior vaginal prolapse, often called a cystocele, develops when the tissues supporting the bladder and the front wall of the vagina weaken. The bladder then descends and pushes into the vaginal wall, sometimes producing a noticeable vaginal bulge.

A cystocele is not cancerous and is not usually dangerous. However, it can cause pressure, discomfort, difficulty emptying the bladder, urinary leakage and recurrent urinary tract infections. Treatment depends on the severity of the prolapse and, more importantly, how much it affects daily life.

What normally supports the bladder?

The bladder rests above the front wall of the vagina. It is supported by:

• Pelvic-floor muscles
• Connective tissue and fascia between the bladder and vagina
• Ligaments supporting the uterus and top of the vagina
• The normal attachments of the vagina to the pelvic sidewalls

These structures work together rather like the ropes, fabric and anchor points of a hammock. When the supporting tissue stretches, tears or detaches, the front vaginal wall can descend and the bladder follows it.

Although commonly called a “fallen bladder,” the bladder has not become detached. It has lost some of its normal support.

How does a cystocele develop?

Usually, several factors contribute over time.

Pregnancy and vaginal childbirth

Pregnancy stretches the pelvic floor, while vaginal delivery can injure muscles, nerves and connective tissue. The risk may be higher after:

• Multiple vaginal births
• Forceps-assisted delivery
• A prolonged second stage of labour
• Delivery of a larger baby
• Significant perineal injury

A prolapse may become apparent soon after childbirth or many years later.

Menopause and ageing

After menopause, falling oestrogen levels can make vaginal and supporting tissues thinner and less elastic. Ageing also changes collagen strength and muscle function.

Chronic pressure on the pelvic floor

Repeated increases in abdominal pressure may contribute, including:

• Chronic constipation and straining
• Persistent coughing
• Heavy lifting
• Obesity
• High-impact activity in susceptible women

Previous pelvic surgery

A cystocele can occur after hysterectomy or previous prolapse surgery, particularly if the upper vaginal or apical support is weakened.

Inherited tissue characteristics

Some women naturally have more flexible connective tissue. Family history, joint hypermobility and certain connective-tissue disorders may increase susceptibility.

What does an anterior prolapse feel like?

A mild cystocele may cause no symptoms and may only be detected during an examination. More advanced prolapse can cause:

• A vaginal bulge or lump
• A sensation that “something is coming down”
• Pelvic heaviness, dragging or pressure
• Symptoms that worsen later in the day
• Discomfort after prolonged standing or activity
• Difficulty inserting a tampon
• Discomfort or altered sensation during intercourse
• Vaginal irritation, discharge or spotting when exposed tissue rubs on clothing

Some women describe the bulge as feeling like a small egg, golf ball or soft balloon at the vaginal opening.

The size seen during an examination does not always match symptom severity. A modest prolapse can be very troublesome, while a larger prolapse may cause surprisingly few symptoms.

How can a cystocele affect the bladder?

Because the bladder and urethra depend on coordinated pelvic support, a cystocele can produce several different and sometimes apparently contradictory urinary symptoms.

These may include:

• A slow or intermittent urinary stream
• Hesitancy before urine starts
• The need to strain to urinate
• A feeling that the bladder has not emptied
• Needing to change position to finish urinating
• Urinary urgency and frequency
• Waking at night to urinate
• Stress incontinence with coughing, laughing or exercise
• Urge incontinence
• Leakage after standing up from the toilet

Some women need to press the vaginal bulge backwards with a finger to empty the bladder. This is known as splinting or manual reduction.

Interestingly, a larger prolapse can sometimes kink or compress the urethra and temporarily hide stress incontinence. Once the prolapse is reduced with a pessary or repaired surgically, previously hidden leakage may become apparent. This is called occult stress urinary incontinence.

Can a cystocele cause urinary retention?

Yes. A significant prolapse may alter the angle between the bladder and urethra, obstruct urine flow or prevent the bladder muscle from emptying efficiently.

Possible consequences include:

• Persistent residual urine after voiding
• Recurrent urinary infections
• Overflow leakage
• Increasing difficulty passing urine
• Bladder stones in uncommon cases
• Upper urinary-tract obstruction or kidney problems in severe, longstanding prolapse

Complete acute retention is uncommon but requires urgent medical attention.

The amount remaining in the bladder can be assessed with a bladder ultrasound or catheter measurement. The prolapse may be reduced during testing to determine whether bladder emptying improves.

Why may urinary infections become more frequent?

A prolapse does not automatically cause infection. However, urine left in the bladder after voiding may provide an environment in which bacteria can multiply.

Menopause-related vaginal atrophy can add to this risk by changing the protective vaginal bacterial population and weakening the tissues around the urethra.

Not every episode of urgency, frequency or burning is an infection. Whenever practical, suspected recurrent UTIs should be confirmed with a midstream urine culture before antibiotics are prescribed.

Management may include:

• Improving bladder emptying
• Treating constipation
• Using a pessary to reduce the prolapse
• Low-dose topical vaginal oestrogen when appropriate
• Culture-directed antibiotics for proven infection
• Additional UTI-prevention measures in selected women

How is a cystocele assessed?

Assessment usually includes:

• A detailed history of the bulge and urinary symptoms
• Pelvic examination while lying down and sometimes standing
• Asking the patient to cough or strain
• Assessment of the front, back and top of the vagina
• Evaluation of uterine or vaginal-vault support
• Urine testing
• Measurement of residual urine after voiding
• Assessment for vaginal atrophy
• Pelvic-floor muscle assessment

Clinicians commonly describe prolapse using the Pelvic Organ Prolapse Quantification system, known as POP-Q.

A bladder diary, kidney ultrasound, cystoscopy or urodynamic study may be appropriate when there is significant retention, recurrent infection, complex incontinence, previous pelvic surgery or uncertainty about bladder function.

Does every cystocele need treatment?

No. Treatment is generally based on symptoms, not examination findings alone.

A mild or moderate prolapse that is not bothersome can often be observed. Prolapse is not inevitably progressive, and delaying treatment does not usually make later surgery impossible.

Treatment becomes more appropriate when the prolapse causes:

• A troublesome bulge
• Difficulty emptying the bladder
• Recurrent infections associated with residual urine
• Vaginal ulceration or bleeding
• Limitations on exercise, work or sexual activity
• A significant effect on quality of life

Can the prolapse be reduced?

A prolapse may be gently pushed back into the vagina. This does not permanently repair the weakened support, but it can temporarily restore the anatomy and improve comfort or bladder emptying.

Some women manually reduce the prolapse before passing urine. If this is frequently necessary, medical assessment is advisable.

A clinician may also reduce the prolapse during an examination, bladder-emptying test or urodynamic study. A vaginal pessary provides more sustained non-surgical reduction.

If a prolapse suddenly becomes very painful, cannot be reduced, causes heavy bleeding or is associated with an inability to urinate, urgent assessment is required.

Conservative management

Observation

When symptoms are mild, reassurance and periodic review may be all that is required.

Pelvic-floor physiotherapy

A pelvic-floor physiotherapist can assess muscle strength, coordination and relaxation. An individualised program may:

• Improve mild prolapse symptoms
• Reduce the sensation of heaviness
• Improve stress or urge incontinence
• Teach safer lifting and pressure-management techniques
• Assist bowel emptying without excessive straining

Exercises cannot reliably “pull back” a large prolapse permanently, but they can improve symptoms and support bladder control.

Addressing contributing factors

Helpful measures may include:

• Treating constipation
• Avoiding repeated straining
• Managing chronic cough
• Gradual weight reduction where appropriate
• Modifying heavy lifting
• Using good lifting and breathing techniques
• Maintaining regular, low-impact physical activity

Women should not be frightened away from exercise. The aim is sensible modification rather than unnecessary restriction.

Vaginal pessary

A pessary is a removable silicone device placed inside the vagina to support the prolapse. Common designs include ring pessaries and space-filling pessaries.

Advantages include:

• Avoiding or postponing surgery
• Rapid improvement in bulge symptoms
• Possible improvement in bladder emptying
• Suitability for women planning future pregnancy
• Use in women who are not medically fit for surgery
• The ability to assess whether prolapse reduction reveals stress incontinence

Finding the correct size sometimes requires more than one fitting. Follow-up is important to check comfort, bladder emptying and vaginal health.

Possible problems include discharge, spotting, odour, difficulty removing the device and vaginal ulceration. These risks are reduced by appropriate fitting, regular review and, in suitable postmenopausal women, topical vaginal oestrogen.

When is surgery considered?

Surgery may be considered when:

• Conservative treatment has not provided adequate relief
• The prolapse extends to or beyond the vaginal opening
• Bladder emptying is significantly impaired
• The patient does not want or cannot manage a pessary
• Symptoms substantially affect quality of life

The goal is to improve symptoms and function, not simply to make the examination look anatomically perfect.

Before surgery, the surgeon should discuss:

• The patient’s most troublesome symptoms
• Sexual activity and future preferences
• Whether the uterus is present
• Previous pelvic surgery
• The strength of apical or upper-vaginal support
• Existing or occult urinary incontinence
• The possibility of recurrence
• The benefits and complications of each surgical route

Native-tissue anterior vaginal repair

The most established vaginal operation for a cystocele is an anterior colporrhaphy, also called an anterior vaginal repair.

Through an incision in the front vaginal wall, the bladder is carefully separated from the vagina. The patient’s own supporting tissue is then folded, tightened or reattached, and the vaginal incision is closed with dissolving sutures.

This is a native-tissue repair, meaning no permanent synthetic mesh is placed through the vagina.

Possible complications include:

• Bleeding or infection
• Temporary difficulty emptying the bladder
• Urinary tract infection
• Injury to the bladder or ureters
• New or persistent urinary urgency
• New or unmasked stress incontinence
• Pain during intercourse
• Vaginal narrowing
• Recurrence of the prolapse
• Need for further prolapse or continence surgery

A catheter may be required temporarily until bladder emptying is satisfactory.

Why apical support matters

A cystocele is not always an isolated defect. Weakness at the top of the vagina or uterus can pull the front wall down.

Repairing only the visible cystocele without addressing significant upper-vaginal weakness may increase the likelihood of recurrence. Surgery may therefore include an apical suspension procedure, with or without hysterectomy, depending on the anatomy and the patient’s preferences.

Options may include:

• Uterosacral ligament suspension
• Sacrospinous fixation
• Uterine-preserving hysteropexy
• Abdominal or laparoscopic sacrocolpopexy

Sacrocolpopexy and abdominal mesh

Sacrocolpopexy is usually performed laparoscopically or robotically. Surgical mesh is attached to the vagina and then secured to the sacrum to restore upper-vaginal support.

This is different from placing a mesh sheet through a vaginal incision to repair a cystocele. Abdominally placed mesh remains available in Australia for selected prolapse operations.

It has its own risks, including mesh exposure or erosion, infection, pain, bowel or urinary injury and the possibility of further surgery. The benefits and risks should be discussed carefully.

Transvaginal synthetic mesh in Australia

Permanent synthetic mesh kits previously used through a vaginal incision for pelvic organ prolapse caused significant concern because of complications such as:

• Mesh exposure through the vaginal wall
• Chronic pelvic or vaginal pain
• Painful intercourse
• Infection
• Bladder or urethral erosion
• Urinary problems
• Difficult or incomplete mesh removal

Following a review of safety and effectiveness, the Australian Therapeutic Goods Administration removed transvaginal mesh products intended solely for treating pelvic organ prolapse from the Australian Register of Therapeutic Goods. TGA information about urogynaecological mesh

This restriction does not mean that all uses of surgical mesh are identical. It is important to distinguish:

• Transvaginal mesh sheets used to treat prolapse
• Small mid-urethral slings used for stress urinary incontinence
• Mesh placed abdominally during sacrocolpopexy
• Biological grafts or allografts

Each involves different materials, surgical approaches, benefits and risks.

What is the role of an allograft?

An allograft is processed human donor tissue. Examples include donor fascia lata obtained from the strong tissue of the thigh.

A biological graft may be placed to reinforce weakened vaginal support. It is not the same as permanent polypropylene mesh. The material acts as a scaffold and is gradually remodelled or absorbed to varying degrees.

The proposed advantages include:

• Avoiding permanent synthetic mesh
• Providing reinforcement where native tissue is weak
• Potentially reducing permanent foreign-body complications
• Offering an option in selected reconstructive or repeat operations

However, these theoretical advantages do not mean that an allograft is routinely better than native-tissue repair.

Limitations of allograft repair

Available evidence has not established that biological graft reinforcement consistently provides better long-term outcomes than a well-performed native-tissue anterior repair. Some grafts may stretch or lose strength as they remodel, and prolapse can recur.

Potential limitations and complications include:

• Graft failure or absorption
• Recurrent prolapse
• Infection
• Inflammatory or wound-healing problems
• Vaginal exposure, although generally less characteristic than with permanent synthetic mesh
• Additional cost
• Limited long-term product-specific evidence
• An extremely low theoretical risk of disease transmission despite donor screening and processing

A major Cochrane review concluded that evidence does not support routine use of biological grafts over native-tissue repair for vaginal prolapse. Cochrane review of transvaginal mesh, grafts and native-tissue repair

For most women undergoing a first anterior repair, native tissue remains the usual vaginal surgical approach. An allograft may be considered selectively, for example, in complex reconstruction, poor-quality tissue or recurrent prolapse, but this should involve careful informed consent and discussion of the uncertainty in long-term benefit.

Women should ask:

• What exact graft product is proposed?
• Is it included on the Australian Register of Therapeutic Goods?
• Why is it preferable in my particular case?
• What evidence supports its use for anterior prolapse?
• What are the surgeon’s results and complication rates?
• What alternatives are available without graft material?

UGSA and USANZ guidance

The Urogynaecological Society of Australasia (UGSA) supports specialist training, credentialing and appropriate governance for clinicians implanting or removing transvaginal mesh. Its published position material emphasises that mesh procedures and mesh-complication surgery require suitable training, experience, consent and clinical oversight. UGSA position statements

The Urological Society of Australia and New Zealand (USANZ) represents urologists involved in treating urinary dysfunction, retention, recurrent infection and pelvic-floor disorders.

There is no joint UGSA–USANZ statement recommending allograft reinforcement for routine anterior prolapse repair. It would therefore be inaccurate to suggest that either organisation endorses routine allograft use.

The practical Australian approach is individualised and evidence-based:

• Treat symptoms rather than the examination alone
• Offer observation, pelvic-floor physiotherapy and pessary management where appropriate
• Assess bladder emptying and culture suspected recurrent infections
• Use native-tissue repair as the usual vaginal surgical option
• Evaluate and restore apical support where necessary
• Avoid routine transvaginal permanent synthetic mesh for prolapse
• Reserve biological grafts or other specialised reconstruction for carefully selected patients
• Provide clear consent regarding alternatives, uncertainty, recurrence and complications

Recovery after anterior prolapse surgery

Recovery varies according to the procedure. Patients can generally expect:

• A temporary urinary catheter
• A bladder-emptying assessment before discharge
• Light vaginal bleeding or discharge
• Pelvic discomfort for several days
• Avoidance of constipation and straining
• Gradual return to walking and daily activities
• Temporary restrictions on heavy lifting and vaginal intercourse

Urgent advice should be sought for fever, heavy bleeding, worsening pain, inability to urinate, offensive discharge, calf swelling, chest pain or shortness of breath.

Can a cystocele return?

Yes. Surgery repairs the current weakness but cannot permanently reverse ageing, tissue quality or every future pressure placed on the pelvic floor.

Recurrence does not always require another operation. A recurrent prolapse may be mild and successfully managed with observation, physiotherapy or a pessary.

Reducing constipation, treating chronic cough, maintaining a healthy weight and using sensible lifting techniques may help protect the repair.

The take-home message

An anterior vaginal prolapse occurs when weakened support allows the bladder to bulge into the front wall of the vagina. It can cause pressure, urinary leakage, incomplete emptying, retention and recurrent infections, but treatment is only necessary when symptoms are troublesome or bladder function is affected.

Conservative measures, particularly pelvic-floor physiotherapy and a vaginal pessary, are effective options for many women. When surgery is needed, native-tissue anterior repair remains the usual vaginal procedure in Australia, often combined with restoration of upper-vaginal support.

Processed human-tissue allografts are different from permanent synthetic mesh, but current evidence does not support their routine use for every cystocele. Their role is selective and should be discussed with a surgeon experienced in female pelvic-floor reconstruction.

So, if you can feel a bulge and it is affecting your waterworks, come see your local urogynaecologist or local Brisbane urologist specialising in this field.

This article provides general information and does not replace individual medical advice. Treatment should be selected after assessment by an appropriately trained urologist, urogynaecologist or gynaecologist.