Urethral diverticula: a review and an update

British Association of Urological Surgeons (BAUS) consensus document for the management of benign female urethral lesions

OBJECTIVE

To provide a consensus document for the management of benign female urethral lesions.

METHODS

The British Association of Urological Surgeons (BAUS) Female, Neurological and Urodynamic Urology (FNUU) Section created a consensus document to guide the management of the commonest of urethral swellings using expert consensus with a modified Delphi technique.

RESULTS

Benign urethral lesions in females can include urethral mucosal prolapse, urethral caruncle, Skene's gland cysts and urethral diverticulum. They can present in a variety of ways including haematuria, lower urinary tract symptoms and voiding dysfunction, and can initially be overlooked or not recognised, resulting in delayed management.

CONCLUSION

This consensus statement led by the FNUU Section of the BAUS, in consultation with BAUS members and consultants working in units throughout the UK, aimed to create a comprehensive and pragmatic management pathway for the assessment, investigation and treatment of benign urethral lesions in females.

A prospective cohort trial evaluating sexual function after urethral diverticulectomy

OBJECTIVE

Dyspareunia is a main symptom of urethral diverticulum in the female population, reported up to 60% of patients. Pain may cease after diverticulectomy as published in previous retrospective studies. To date scarce or no data exists on the postoperative outcome in terms of sexual function. The present study wants to quantify sexual function and evaluate lower urinary tract symptoms in sexually active patients after resection of urethral diverticulum.

STUDY DESIGN

In this prospective cohort trial at a tertiary referral center, we evaluated 40 female patients who presented with symptomatic urethral diverticulum and were sexually active. All of them underwent a standardized surgical procedure with inverted U-shape colpotomy between 2008 and 2018. The patients completed the Female Sexual Function Index (FSFI), which is determined by the mean score of the different domains, and underwent urodynamic assessment both at baseline examination before surgery and 12 months postoperatively. For statistical analysis, we conducted a paired Wilcoxon rank sum test analyzing the non-normally distributed non-parametric variables of the female sexual function index.

RESULTS

In two patients a malignancy was found in postoperative histology and received a different therapeutical approach. They have been excluded from statistical analysis. Sexual function improved in all domains (n = 38): total score (Z = -5.4, P < 0.000), satisfaction (Z = -5.3, P < 0.000), pain (Z = -5.4, P < 0.000), arousal (Z = -2.6, P = 0.010), lubrication (Z = -2.4, P = 0.020), desire (Z = -2.6, P = 0.009) and orgasm (Z = -2.2, P = 0.029). Maximum urethral closure pressure deteriorated from 39 to 36 cmH2O (P = 0.0008) and residual urine increased from 10 ml to 20 ml after surgery (P = 0.0019). No statistical significance is found for bladder capacity and free urinary flow.

CONCLUSIONS

All domains of the female sexual function index improved. Patients' bothersome symptoms, mainly pain may cease and sexual satisfaction increases, which is reassuring concerning patients' preoperative consent. We should be aware that occasionally an unexpected malignancy may be detected and it is mandatory to examine all excised tissue histologically. Lower urinary tract function remains clinically unchanged, although maximum urethral closure pressure deteriorated and postvoid residual increased though not being clinically significant.

Does a tailored magnetic resonance imaging technique affect the surgical planning and outcomes for different cystic urethral and periurethral swellings in females? Seven years tertiary center experience

PURPOSE

To evaluate the use of magnetic resonance imaging (MRI) in preoperative delineation and surgical planning for the management of female urethral and periurethral cystic vaginal swellings, with emphasis on postoperative surgical outcomes.

MATERIALS AND METHODS

This is a retrospective analysis of females complaining of periurethral and urethral cystic swellings referred to our tertiary center, who underwent MRI for preoperative planning in the period from January 2014 till January 2021, with a total number of 57 patients. Data retrieved from the medical records included: patients' demographics, presenting symptoms and signs, preoperative radiological investigations, duration of symptoms, previous surgical intervention, detailed intraoperative data, postoperative complications, and postoperative follow-up.

RESULTS

Urethral diverticulum was the commonest cystic lesion representing (64.9%) followed by Skene gland cysts in 14%, Mullerian cysts in 7%, Gartner cysts in 3.5%, and dermoid inclusion cysts in 10.5%. MRI precisely diagnosed the various pathological entities and anatomical complex lesions prior to surgery. This was confirmed after surgery and pathology analysis. All patients were followed up with a mean duration of 35 months, without any evidence of recurrence.

CONCLUSION

MRI as a standalone imaging technique is mandatory for diagnosis of all urethral and periurethral cystic lesions, as it offers the most accurate diagnostic modality for delineation of these lesions and hence aids in the preoperative surgical planning, aiming to avoid recurrence and improving surgical outcomes.

Stress Urinary Incontinence After Urethral Diverticulum Repair Without Concomitant Anti-Incontinence Procedure

OBJECTIVE

To review the rates of persistent and de novo stress urinary incontinence (SUI) following urethral diverticulum (UD) repairs performed without concomitant SUI surgical procedures.

METHODS

Following IRB approval, charts of women who underwent UD excision by three FPMRS surgeons were reviewed. Data collected from the electronic medical record included demographic information, preoperative symptoms and evaluation (validated questionnaires [UDI-6, QoL]), imaging studies, operative details, post-operative symptoms, and subsequent surgical interventions. Excluded were women with <6 months follow-up or concomitant pubovaginal sling placement. SUI was diagnosed by patient report, and UD was confirmed by preoperative magnetic resonance imaging or voiding cystourethrogram. The primary outcome was defined as the rate of SUI following UD repair. Secondary outcomes included resolution of pre-operative SUI, rate of self-reported secondary SUI, and SUI surgical intervention post-UD repair.

RESULTS

From 2003-2018, 61 of 67 women met study criteria. SUI pre-UD repair was reported in 31 of 61 (51%). During UD repair, 3 patients underwent Martius flap interposition. Post-UD repair, 18/61 (30%) reported SUI. Persistent SUI was present in 14 of 31 (45%), and de novo SUI occurred in 4 of 30 (13%). Postoperative responses revealed statistically significant improvements in QoL and most questions of UDI-6 at median 18 months. SUI was surgically managed in 3 patients using bulking agent injections (2) and autologous fascial sling placement (1). Overall, 3 of 61 (5%) underwent SUI intervention post-UD repair.

CONCLUSION

Without prophylactic SUI corrective procedures performed during UD repair, we observed a low rate of de novo SUI, and only 5% with bothersome SUI opting for surgical intervention.

Hybrid Sling for the Treatment of Concomitant Female Urethral Complex Diverticula and Stress Urinary Incontinence

This study aims to present an alternative technique with the use of a transobturator hybrid sling (autologous fascia lata with a synthetic sling) in two patients with complex urethral diverticulum (CUD), urinary stress incontinence (SUI) and a large incisional infraumbilical hernia. Staged procedures could be performed, but considering the risk of persistence or worsening SUI, and no standard management strategy of SUI associated with CUD; simultaneous treatment was proposed. It is preferable to use autologous materials in such cases. However, the presence of incisional hernia protruded with its content covering the suprapubic area prohibits the retropubic sling technique due to visceral lesion risk. The diverticulum and SUI were repairs in the same surgery using a hybrid transobturator. The technique used for obtaining the fascia lata followed the literature, and a 6 cm segment was acquired. The patients were re-prepared in a lithotomy fashion, and diverticulectomy was performed. The segment of fascia lata was fixed to the mesh and sling was manipulated so that its middle part (fascia) rested directly below the urethra. After 6 months post-operatively, patients referred significant improvement in urinary symptoms. Patients have not had any storage symptoms, International Consultation on Incontinence Questionnaire – Short Form = zero, no SUI, and have not had any mesh-related complications. In conclusion, the present study evaluated a new technique for the treatment of CUD with SUI in a particular clinical scenario. Other studies with extended follow-up periods and larger sample sizes should be performed in this subset of patients.

Risk factors of postoperative sexual function in patients with urethral diverticulum and their partners: A cohort study of 83 women

Introduction and Objective:

Several studies have focused on the treatment and recurrence of urethral diverticulum (UD). However, few investigations have addressed sexual function in patients with UD. Therefore, we sought to examine sexual function in women affected by UD.

Materials and Methods:

There were 108 accepted cases involving transvaginal diverticulectomy at our institution. Ultimately, 83 women were included for further analysis, only 61 of these women had sexual partners. We collected data for the Female Sexual Function Index (FSFI) from the female patients and the Male Sexual Health Questionnaire (MSHQ) from their male partners before and after surgery.

Results:

Preoperatively, the UD size affected the female patient's arousal and lubrication (p=0.04), and the UD location affected their satisfaction. However, no significant between-group differences were found in the total FSFI score. For all women, sexual activity improved after surgery (p=0.0087). In addition to improvements in arousal for women with a large UD, improvements in lubrication were affected by the UD size, number and shape, increases in satisfaction scores were impacted by the UD location and shape, and pain relief was linked to the UD number and shape. Analysis of the MSHQ results revealed no between-group differences among the male partners.

Conclusion:

Only the UD size and location affected sexual function in women with a small UD. Surgery could improve female sexual function but did not affect the sexual function of the patient's partners.

Female Urethral Diverticula: Diagnosis, Pathology, and Surgical Outcomes at an Academic, Urban Medical Center

OBJECTIVE

To describe the outcomes of a series of women diagnosed with a urethral diverticulum at an urban tertiary care center.

METHODS

An Institutional Review Board-approved review of a series of 78 women with a diagnosis of urethral diverticulum from 2009 to 2015 was performed. Clinical, radiographic, and pathologic data was collected by retrospective review of patient medical records. Data regarding treatment selection and postoperative outcomes were collected. A multivariable logistic regression was performed to identify preoperative variables that were associated with undergoing surgical resection.

RESULTS

Of the 78 patients reviewed, the median age was 45.5 years (interquartile range (IQR) 36.0-53.8), median body mass index was 30.4 (IQR 24.8-34.4). The most common presenting symptoms included: incontinence (39%), recurrent urinary tract infections (23%), dysuria (18%), discharge (13%), dyspareunia (12%), and hematuria (9%). Additionally, 16 (21%) women were asymptomatic. Of these 78 cases, 40 underwent surgical excision (51%). Of the remaining 38, 13 were symptomatic and lost to follow-up, 23 were managed expectantly, and 2 underwent surgery after the study period. Review of the pathology results revealed that the most common finding was squamous metaplasia (31%). There was 1 adenocarcinoma in the series (2.5%). Of the 40 patients who had surgery, 3 (7.5%) had a diverticular recurrence and 5 (12.5%) developed stress urinary incontinence. The median follow-up was 7.5 months (IQR 1-20.25 months).

CONCLUSION

A variety of presenting symptoms existed for women with a urethral diverticulum seeking medical care at an urban medical center. When controlling for age, body mass index, and race, the presence of preoperative symptoms was associated with undergoing surgical resection.

Female urethral diverticula: An elusive pathology that can cause significant problems

Female urethral diverticula are a rare pathology, although thought to be under-diagnosed. They can present with a large variety of symptoms, and can be complicated by stones or malignancy. Magnetic resonance imaging is widely accepted to be the best form of imaging for this condition, although voiding cystourethrogram studies are helpful in providing information on bladder function. Symptomatic patients should be treated surgically through urethral diverticulectomy.

Level of evidence: Not applicable for this multicentre audit.

Ultrasound imaging in urogynecology - state of the art 2016

The role of ultrasound imaging in urogynecology is not clearly defined. Despite significant developments in visualization techniques and interpretation of images, pelvic ultrasound is still more a tool for research than for clinical practice. Structures of the lower genitourinary tract and pelvic floor can be visualized from different approaches: transperineal, introital, transvaginal, abdominal or endoanal. According to contemporary guidelines and recommendations, the role of ultrasound in urogynecology is limited to the measurement of post-void residue. However, in many instances, including planning and audit of surgical procedures, management of recurrences or complications, ultrasound may be proposed as the initial examination of choice. Ultrasound may be used for assessment of bladder neck mobility before anti-incontinence procedures. On rare occasions it is helpful in recognition of pathologies mimicking vaginal prolapse such as vaginal cyst, urethral diverticula or rectal intussusception. In patients subjected to suburethral slings, causes of surgery failure or postsurgical voiding dysfunctions can be revealed by imaging. Many reports link the location of a tape close to the bladder neck to unfavorable outcomes of sling surgery. Some postoperative complications, such as urinary retention, mesh malposition, hematoma, or urinary tract injury, can be diagnosed by ultrasound. On the other hand, the clinical value of some applications of ultrasound in urogynecology, for example measurement of the bladder wall thickness as a marker of detrusor overactivity, has not been proved.

Patient Characteristics and Perioperative Outcomes of Female Urethral Diverticulectomy: Analysis of a Multi-Institutional Prospective Database

OBJECTIVE

To assess the patient and perioperative characteristics of urethral diverticulectomy using a large multi-institutional prospectively collected database.

MATERIALS AND METHODS

Female patients were identified using the American College of Surgeons National Surgical Quality Improvement Program participant user files (2007-2012) and current procedural terminology codes for urethral diverticulectomy (53,230). Preoperative variables and 30-day complications were examined.

RESULTS

Urethral diverticulectomies were performed on 122 females during the study period. The cohort was relatively healthy; 80% of patients had an American Society of Anesthesiologists score of 1 or 2. The majority of procedures were performed in an outpatient setting (82%). The median procedure length was 77.5 minutes (interquartile range: 50.5-112.5), and the median length of stay was 0 days (interquartile range: 0-1). The overall 30-day complication rate was 3.3% (n = 4): 3 patients developed urinary tract infections (UTIs) and 1 patient developed both a UTI and a superficial wound infection.

CONCLUSION

To our knowledge, our study represents the largest multi-institutional cohort of patients having undergone urethral diverticulectomy. The patients requiring this intervention were relatively healthy, and the procedure itself was short, allowing most patients to be discharged within 24 hours. The 30-day complication rate was very low, with UTI being the most common complication. Thus, patients can continue to be confidently counseled that urethral diverticulectomy is a safe procedure with very few perioperative complications.

Risk factors of urethral diverticula in male patients with spinal cord injury

STUDY DESIGN

A case-control study in a series of 55 males with urethral diverticula (UD) and their correspondent control, matched by age and time of radiological assessments.

OBJECTIVES

To evaluate the risk factors to develop UD in males with spinal cord injury (SCI) and the place in the urethra where they are, most commonly, allocated.

SETTING

Toledo, Spain.

METHODS

Clinical histories and urodynamic studies, of all patients, were reviewed. The study was completed with a telephone survey according to an established protocol.

RESULTS

The univariate analysis study showed the following risk factors: the age of onset of the spinal injury, the sphincterotomy procedure, personal history of lower urinary tract infections (LUTIs) and the chronic need of either indwelling catheter (IC) or the external condom drainage (ECD). Regarding the location of the UD, we have found the stress urinary incontinence as the only risk factor to develop UD in the prostatic urethra.On the other hand, we can conclude that the sphincterotomy, the ECD, the personal history of LUTIs and the detrusor external sphincter dyssynergia seem to be risk factors to develop diverticula in the bulbo-membranous urethra. Finally, we could point out the IC as the only risk factor for penile UD. Multivariate analysis showed that all of these risk factors were independent among them except the age of the onset of the injury and the ECD for UD in the bulbo-membranous urethra.

CONCLUSION

According to our study, there is evidence of some specific risk factors for the development of UD in male patients with SCI, and therefore we should adopt the appropriate preventive measures to prevent them.

Urethral Diverticulum in Young Nulliparous with Unusual Presentation

CASE

We highlight a case of chronic skenitis leading to the formation of Urethral diverticulum. A young nulliparous woman presented with dysuria, intermittent hematuria and a 3 cm cystic swelling adjacent to the left distal urethra. Aspiration of the cyst was done initially. Excisional biopsy was followed when it recurred. Urethral diverticulum was revealed when the excisional operation traced up to left distal urethral wall. The cystic swelling urethral diverticulum was completely enucleated.

OUTCOME

The pathology report showed fibrous tissue with cystic spaces lined by squamous epithelium with inflammation, which was consistent with a urethral diverticulum.

CONCLUSION

The presenting symptoms and signs of female urethral diverticulum are often diverse and easily overlooked, we have to keep in mind that cases with unusual age, location and presentation can also exist.

Pathologic Outcomes following Urethral Diverticulectomy in Women

Purpose. Although most urethral diverticula in women are benign, there is a subset of patients who develop malignant changes. Limited studies report the pathologic findings associated with this relatively rare entity. We describe the clinicopathologic findings of women who underwent urethral diverticulectomy. Methods. A consecutive series of 29 women who underwent surgical resection of a urethral diverticulum were identified between 1992 and 2013. Clinical and radiographic data was collected by retrospective review of patient medical records. All pathological slides were rereviewed by a single urologic pathologist. Results. Of the 14 women with clinical data, 9 (64%) presented with urgency, 7 (50%) with urinary frequency, 3 (21%) with urinary incontinence, and 3 (21%) with dysuria. Mean diverticular size was 2.3 (±1.4) cm. Although one patient (3%) had invasive adenocarcinoma on final pathology, the remaining 28 cases (97%) demonstrated benign features. The most common findings were inflammation (55%) and nephrogenic adenoma (21%). Conclusions. Although most urethral diverticula in women are benign, there is a subset of patients who develop malignancy in association with the diverticulum. In this series, 97% of cases had a benign histology. These findings are important when counseling patients regarding treatment options.

Study of the prevalence and interobserver reproducibility of radiologic images suggestive of urethral diverticula in men with spinal cord injury

OBJECTIVES

To determine the prevalence of radiologic images suggestive of urethral diverticula (UD) in men with spinal cord injury (SCI) and to study the interobserver diagnostic reproducibility.

METHODS

Radiological studies (i.e. voiding cystourethrography and retrograde urethrography) performed over 1 year on men with SCI were independently reviewed by 3 researchers (1 urologist and 2 radiologists).

RESULTS

The prevalence of UD was found to be between 4.2 and 9.8% of the patients, the higher figure obtained when including also the doubtful images. The kappa index of agreement between the researchers was low (between 0.15 and 0.40). The factors that significantly influenced agreement were localization in the prostatic urethra (p = 0.021), localization in the penile urethra (p = 0.000) and fusiform morphology (p = 0.004). Logistic regression analysis showed that the variables that independently influenced diagnostic agreement were the following: localization in the penile urethra (in favor of agreement) and fusiform morphology (against agreement).

CONCLUSIONS

Radiologic images suggestive of UD constitute a frequent finding in men with SCI and raise important diagnostic problems.

Post void dribbling: incidence and risk factors

AIMS

The primary aim of this study was to determine the incidence of post void dribbling (PVD) in women being evaluated for pelvic floor dysfunction. The secondary aim was to identify other conditions present in women with symptoms of PVD.

MATERIALS AND METHODS

163 consecutive women with complaints of PVD who underwent urodynamic testing were studied. Testing was performed to evaluate women scheduled for surgery for incontinence, irritative bladder, urinary retention and pelvic organ prolapse. Subjects completed a medical history and voiding diary. A complete pelvic exam was performed. Patients were questioned regarding symptoms of PVD, stress incontinence, urge incontinence and insensible urine loss. Menopausal status, hormone replacement therapy status, age, body mass index, residual urine volume, genital hiatus length, and evidence of pelvic organ prolapse were recorded. Maximal urethral closure pressure, urethral length, pressure transmission ratio, and documentation of detrusor overactivity or urodynamic stress incontinence were determined by urodynamic testing.

RESULTS

42% of patients had symptoms of PVD. The incidence of PVD decreased with age. In pre- and peri-menopausal women, there was an association between PVD and urge incontinence. In post-menopausal women, there was an association between age, body mass index, and genital hiatus length.

CONCLUSIONS

There was a significant correlation between PVD and urge incontinence in pre-menopausal patients. The overall incidence and causes of PVD relative to age require further study. Body mass index and genital hiatus length may play an important role in PVD, especially in post-menopausal women.

A modified technique for the surgical correction of urethral diverticula using a porcine xenograft

We report a case of urethral diverticulectomy re-enforced with a porcine xenograft to prevent the risk of recurrence or fistula in the presence of a large urethral communication. The use of porcine small intestinal submucosal xenograft (SIS, Surgisis, Cook, Ireland) material has a low graft rejection rate and erosion is rare as the material is degraded after 3 to 6 months. In this case, xenograft achieved tension-free closure of the urethral defect without any postoperative complications.