The urethral caruncle is a small benign growth located at the posterior edge of the urinary meatus. It affects almost exclusively postmenopausal women, and its discovery often causes disproportionate concern relative to its actual severity. Understanding what distinguishes it from other periurethral lesions, identifying recurrence factors, and evaluating current therapeutic options allows for better management.
Urethral Caruncle and Skene’s Gland Hyperplasia: Two Lesions Not to Be Confused
The confusion between urethral caruncle and Skene’s gland hyperplasia remains common, even among some practitioners. Both lesions present as periurethral masses, but their tissue origin and management diverge.
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| Criterion | Urethral Caruncle | Skene’s Gland Hyperplasia |
|---|---|---|
| Location | Posterior edge of the urethral meatus | Lateral or anterior wall of the urethra |
| Tissue Origin | Prolapse of the posterior urethral mucosa | Para-urethral glandular proliferation |
| Typical Appearance | Red, soft mass, often pedunculated | Firmer mass, sometimes cystic |
| Discriminating Imaging | Characteristic appearance on clinical examination | High-resolution MRI (distinct patterns) |
| Biopsy | Rarely necessary unless in doubt | Often required to exclude another pathology |
High-resolution MRI now allows for distinguishing these two entities thanks to distinct imaging patterns that avoid unnecessary biopsies. This advancement, documented in the journal Radiology, reduces invasive procedures in often fragile patients.
To delve deeper into the symptoms and treatment of the urethral caruncle, additional reading helps to better understand the initial management.
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Recurrence of Urethral Caruncle and Vaginal Microbiome Imbalance
Most urethral caruncles respond well to local treatment with topical estrogens. The problem arises when the lesion recurs after stopping treatment, sometimes repeatedly.
An increasingly studied hypothesis links these recurrences to an imbalance in the urethral and vaginal microbiome. Postmenopausal estrogen deficiency alters the local flora: protective lactobacilli decrease, pH increases, and the urethral mucosa becomes more vulnerable to chronic inflammation.
Probiotics and Prevention of Recurrences Without Surgery
Specific probiotic strains (Lactobacillus crispatus, Lactobacillus rhamnosus) are being tested in conjunction with topical estrogens to restore the balance of the vaginal flora. The goal is to reduce local inflammation that promotes recurrent mucosal prolapse.
This approach remains in the clinical research stage. It does not replace validated treatments but opens a pathway for patients for whom estrogens alone are insufficient to prevent recurrence.
- Restoration of vaginal pH through the addition of targeted lactobacilli, reducing chronic irritation of the urethral meatus
- Complement to topical estrogens, not a substitute, for documented recurrent forms
- Need for randomized controlled trials before any formal recommendation in routine practice
Laser Treatment of Urethral Caruncle: An Alternative to Surgical Excision
Classic surgical excision remains the reference treatment when the caruncle resists medical treatments or causes bothersome symptoms (bleeding, pain, partial obstruction). In contrast, minimally invasive laser treatments are gaining ground among recurrent patients.
A multicenter prospective study published in the Journal of Urology reported higher satisfaction rates with laser treatment compared to traditional excision. The laser reduces intraoperative bleeding, healing time, and the risk of post-surgical stenosis of the meatus.
Regulation of Topical Estrogens in Europe
The European Medicines Agency (EMA) published a safety review on vaginal hormonal treatments in October 2025. Several EU countries have initiated a gradual ban on uncontrolled topical estrogens to prevent prolonged use without medical oversight.
This regulatory evolution enhances interest in non-hormonal alternatives, including probiotics and laser techniques, in the management of recurrent caruncles.
Differential Diagnosis: When the Urethral Caruncle Hides Something Else
The majority of urethral caruncles are benign. The diagnosis is based on clinical examination, supplemented if necessary by a biopsy. Vigilance is required in three situations:
- A lesion that grows rapidly or changes color may suggest urethral carcinoma, especially in older women
- A complete urethral prolapse is distinguished by an exteriorized circular mucosa, not a mass localized at the posterior edge
- Inflammatory polyps or periurethral condylomas may mimic a caruncle, making biopsy necessary in case of persistent doubt
High-resolution MRI imaging, when accessible, allows for differentiating periurethral lesions without routinely resorting to biopsy. This option remains primarily available in specialized centers.
The urethral caruncle remains a benign condition whose management is becoming more refined. Accurate identification through imaging, the emergence of probiotics for recurrent forms, and the increasing use of lasers are gradually changing the care pathway for affected postmenopausal patients.