Vaginal Mass
A vaginal mass is any lump, swelling, or protrusion found in the vagina, whether noticed by a woman herself, felt during intercourse, or identified at examination. The causes are varied and mostly benign, and the single most common explanation is not a growth at all but prolapse—a descent of the bladder, bowel, or uterus into the vaginal canal, which is felt as a bulge. Other causes include cysts, polyps, benign solid tumours, and the tissue changes that follow childbirth or surgery. Malignant lesions are uncommon and are usually spread from a neighbouring organ rather than arising in the vagina itself. Because the vagina is directly examinable, establishing which of these is present is usually straightforward.
What is it?
The vagina is a muscular canal whose walls are supported by surrounding connective tissue and by the pelvic floor muscles. In front lies the bladder and urethra; behind lies the rectum; above sits the cervix and uterus. A mass felt in the vagina may arise from the vaginal wall itself, or it may be one of these neighbouring structures pressing into the canal—and that distinction accounts for most of the diagnostic work.
Pelvic organ prolapse is the most common cause by a wide margin, and it is important to understand that it is not a growth. The supporting tissues weaken, most often after childbirth and with the loss of oestrogen after menopause, and an adjacent organ descends into the vaginal space. A cystocele is descent of the bladder into the front wall. A rectocele is bulging of the rectum into the back wall. An enterocele involves small bowel descending into the upper vagina. Uterine prolapse is descent of the uterus itself, and vault prolapse is descent of the top of the vagina after hysterectomy.
The distinguishing feature of prolapse is that it varies with position and activity. It is typically absent or minimal on waking, becomes more prominent through the day, worsens with standing, walking, and lifting, and reduces or disappears on lying down. A woman who describes a bulge that comes and goes in this pattern is almost always describing prolapse rather than a tumour, and this history is more informative than any single examination finding.
The other causes of a genuine vaginal mass fall into several groups.
Cystic lesions include inclusion cysts forming after childbirth or surgery, Gartner duct cysts arising from embryonic remnants along the side wall, Bartholin cysts at the vaginal opening, and Skene duct cysts near the urethra. These are covered in more detail on our Vaginal Cyst page and are among the most frequent findings.
Benign solid lesions include fibroepithelial polyps, which are soft skin-tag-like growths; vaginal leiomyomas, which are benign muscular tumours equivalent to fibroids and uncommon in this location; and condylomata, the warty growths caused by human papillomavirus.
Granulation tissue is a specific and common finding at the top of the vagina after hysterectomy, appearing as a red, fleshy, easily bleeding area at the surgical scar. It causes discharge and bleeding, particularly after intercourse, is entirely benign, and is easily treated—but because it bleeds and looks abnormal, it causes considerable alarm until identified.
Urethral caruncle is a small red fleshy lesion at the urethral opening, very common in postmenopausal women, caused by oestrogen deficiency, and frequently mistaken for something more serious.
Endometriosis can involve the vaginal wall, typically at the top behind the cervix, producing a nodule with pain and bleeding that varies with the menstrual cycle.
A urethral diverticulum presents as a swelling on the front wall and is important because treating it as a simple cyst risks creating a permanent urinary leak. Any anterior vaginal wall mass warrants imaging before any procedure.
Malignant causes are uncommon but are the reason certain features prompt biopsy.
Most cancer found in the vagina has spread there from elsewhere—most often the cervix, uterus, ovary, bladder, or bowel—rather than originating in the vagina. Primary vaginal cancer is rare.
Where it does occur, squamous cell carcinoma accounts for the large majority and is strongly associated with persistent high-risk HPV infection, sharing its risk factors with cervical cancer: smoking, immunosuppression, and a history of cervical precancer or cancer. Vaginal intraepithelial neoplasia is its precursor, is often invisible to the naked eye, and is usually detected through abnormal screening or colposcopy.
Clear cell adenocarcinoma of the vagina has a specific historical association with exposure in the womb to diethylstilbestrol, a medication given to pregnant women until the early 1970s. Women born before that period whose mothers took it have a small but genuine increased risk and were historically offered specific surveillance. This cohort is now in later life, but the association remains relevant when taking a history.
Melanoma of the vagina is rare, aggressive, and importantly may be non-pigmented, so it does not necessarily look like the dark lesion people expect.
In children, a grape-like cluster of tissue protruding from the vagina, sometimes with bleeding, is the classic presentation of rhabdomyosarcoma—known as sarcoma botryoides. It is rare but is a serious diagnosis requiring urgent specialist assessment. Any vaginal bleeding or mass in a prepubertal girl warrants prompt evaluation, since normal causes are limited and a foreign body, abuse, or tumour must each be considered.
Symptoms vary with the cause.
A sensation of a lump, bulge, or heaviness is the most common complaint and, with the positional pattern described above, points to prolapse. Associated urinary symptoms—incomplete emptying, having to push the bulge back to void, frequency, or leakage—and bowel symptoms such as needing to press on the vaginal wall to empty are characteristic of prolapse rather than a tumour.
Discomfort during intercourse and difficulty with tampons occur with masses of any kind.
Bleeding is the symptom that most raises concern. Bleeding after intercourse, between periods, or at any time after menopause warrants examination, and while granulation tissue, atrophy, a polyp, or prolapse with surface ulceration explain most cases, malignancy must be excluded rather than assumed absent.
Persistent offensive or blood-stained discharge similarly warrants assessment.
Pain is unusual with benign lesions other than infected cysts and is worth taking seriously.
Assessment is direct.
Examination is the primary investigation. Inspection identifies the position, appearance, and surface of any lesion. A speculum examination allows the walls and cervix to be seen, and withdrawing the speculum slowly while the woman bears down reveals prolapse that may otherwise be missed. Examining a woman standing, if prolapse is suspected but not apparent lying down, frequently demonstrates it.
Biopsy is the definitive test for any solid, irregular, ulcerated, fixed, pigmented, or persistent lesion, and for any lesion in a woman who is bleeding. The threshold should be deliberately low, since vaginal malignancy is uncommon enough that it is rarely the first consideration and is therefore easy to delay.
Ultrasound distinguishes cystic from solid and assesses the pelvic organs.
MRI is the most informative investigation for large, deep, or atypical masses, for suspected urethral diverticulum, and for staging any confirmed malignancy.
Cervical screening and HPV testing contribute where intraepithelial change is suspected, and colposcopy examines the vaginal walls as well as the cervix when abnormality is found.
Important to Know
Most vaginal masses are benign, and the most common cause—prolapse—is a mechanical problem with effective treatment rather than a growth. Care is typically coordinated by primary care clinicians and gynaecologists, with urogynaecology, specialist vulval services, and gynaecological oncology involved as needed.
Prolapse deserves the fullest discussion because it accounts for most cases and because its management is frequently misunderstood.
Treatment is guided by symptoms rather than by how the prolapse looks. A woman with a visible bulge who is not troubled by it does not require treatment, and a woman with a modest degree of prolapse who finds it distressing does. Nothing is gained by treating an asymptomatic finding.
Pelvic floor muscle training is effective for milder prolapse and improves symptoms in many women. Supervised programmes with a specialist physiotherapist are considerably more effective than leaflets or unsupervised exercises, and referral is worth requesting.
Vaginal pessaries are a genuinely good option that is often underused. A pessary is a device fitted into the vagina to support the descended organ, available in several shapes and sizes, changed periodically, and compatible with normal activity and in many cases intercourse. It avoids surgery entirely, works well for many women, can be tried without commitment, and is suitable for women who wish to avoid an operation or are not fit for one. It is a legitimate long-term solution rather than a stopgap.
Surgery repairs the supporting tissues and is effective, though recurrence occurs in a proportion of women. The choice of operation depends on which compartment is affected and on whether the uterus is present. Topical oestrogen before and after surgery improves tissue quality in postmenopausal women.
A note on vaginal mesh is warranted given public concern. Transvaginal mesh for prolapse repair has been restricted or suspended in many countries following recognition of serious complications including erosion and chronic pain. Native tissue repair without mesh is the standard approach for most prolapse surgery now, and women considering surgery should ask specifically what will be used.
Topical oestrogen deserves separate mention because it helps several conditions in this area simultaneously. In postmenopausal women it improves tissue quality, reduces atrophic bleeding and discomfort, helps urethral caruncle, improves tolerance of a pessary, and reduces urinary symptoms. It acts locally with minimal absorption, and is generally considered safe for most women including many with a history of breast cancer, though that specific situation warrants discussion with the treating team.
Granulation tissue after hysterectomy is treated with silver nitrate application or removal in clinic, resolving the bleeding and discharge that prompted the consultation. It is benign, but tissue is usually sent for examination because recurrence at the vaginal vault is a rare possibility after hysterectomy for cancer.
Benign polyps and symptomatic cysts are removed where they cause problems and left alone where they do not.
Vaginal intraepithelial neoplasia is managed with topical treatment, laser ablation, or local excision, with ongoing surveillance, since it can recur and a proportion progresses if untreated. Women who have had cervical precancer or cancer remain at risk of vaginal disease afterwards, including after hysterectomy, which is why vault screening continues in those circumstances.
Vaginal cancer is rare enough that treatment should be at a specialist centre. Most cases are treated with chemoradiotherapy including brachytherapy, with surgery in selected situations. Outcomes depend on stage, and the same sexual and pelvic side effects described for cervical cancer treatment apply, with vaginal dilator use and topical treatment an important part of aftercare.
Any vaginal bleeding or mass in a child requires prompt specialist assessment rather than reassurance. Causes include foreign body, infection, and rarely tumour, and the possibility of abuse must be considered sensitively by clinicians experienced in this area.
An honest word about embarrassment is appropriate. Prolapse in particular is very common and very under-reported, with many women enduring symptoms for years assuming nothing can be done or that it is an inevitable consequence of childbirth and age. It is neither inevitable nor untreatable, and effective options exist that do not require surgery.
Care is coordinated by primary care and gynaecology, with urogynaecology and specialist services as needed. Examination, imaging, and biopsy findings are interpreted alongside symptoms, obstetric and surgical history, and menopausal status rather than in isolation.
Patient education plays an important role. Understanding that a bulge varying with position is almost always prolapse, that treatment depends on symptoms rather than appearance, that pessaries are an effective alternative to surgery, that topical oestrogen helps several problems at once, and that any bleeding warrants examination regardless of how likely a benign cause seems all contribute to appropriate care.
Red flag symptoms include any vaginal bleeding after menopause; bleeding after intercourse or between periods; a lesion that is ulcerated, hard, fixed, irregular, pigmented, or bleeding on contact; a mass that is enlarging; persistent offensive or blood-stained discharge; pain that is persistent or worsening; a prolapse that becomes painful, ulcerated, or cannot be reduced; inability to pass urine; any vaginal bleeding or mass in a child; and a new vaginal lesion in a woman with a history of cervical precancer or cancer. These warrant prompt medical evaluation and, for anything not clearly benign, biopsy.