Peyronie's disease: a literature review on epidemiology, genetics, pathophysiology, diagnosis and work-up

Investigating iontophoresis as a therapeutic approach for Peyronie's disease: a systematic review

INTRODUCTION

Iontophoresis therapy (IPT) is a noninvasive technique that uses electrical impulses to deliver charged molecules into the skin for controlled and targeted drug delivery. IPT has been explored as a noninvasive treatment option for Peyronie's disease (PD), but the current literature in this regard is still scarce.

OBJECTIVE

We aimed to systematically review the current literature on the application of IPT in the management of PD to provide a comprehensive evaluation and holistic outlook on the subject.

METHOD

A comprehensive search strategy was implemented in the following databases to retrieve research articles: PubMed (MEDLINE), Scopus, and Web of Science. Google Scholar was also manually searched. The search results were imported into Rayyan reference management for assessment based on the predefined inclusion criteria. The quality of the articles was evaluated by the proper JBI checklist (ie, per the study design), and the JBI grades of recommendation were used for grading the evidence.

RESULTS

A systematic search yielded 451 publications, 11 of which met the criteria to be included in this systematic review. The results demonstrated that IPT, usually with verapamil and dexamethasone, has shown promising results in treating PD. These methods can reduce pain, plaque size, and penile curvature while improving sexual function and quality of life with no serious adverse events. However, most studies had moderate to low quality, indicating a weak recommendation for a certain health management strategy.

CONCLUSION

Based on the extant literature, there is currently insufficient evidence to support the use of IPT for the management of PD. Placing it in the forefront of research can facilitate the management choices for PD even further, given its therapeutic potential.

Use of thermographic imaging for the evaluation of erectile dysfunction and Peyronie's disease

Thermographic imaging is a technique to measure infrared radiation to report temperature and has been used in prior research to assess sexual arousal by measuring genital temperature. We hypothesized this can be used quantitatively to assess erectile function. We conducted an observational clinical trial of this technique by performing thermographic imaging in the flaccid and erect state and compared these values with hemodynamic measurements performed by penile Doppler/duplex ultrasound (PDDU). We also hypothesized that in men with Peyronie's disease (PD), the plaque would be visible on thermographic imaging and took thermographic measurements in this area for patients with PD. Any man scheduled to undergo PDDU in our urology clinic was approached for recruitment. PDDU was performed by one of two experienced urologists. We recruited 30 men for this study. Seven of these men had PD. The change in measured temperature between flaccid and erect states correlated significantly with the peak systolic velocity r = 0.46 (p = 0.025). In the seven men with PD the mean change in temperature of the plaque was +0.9 °C versus +2.1 °C in the normal penis (p = 0.28). Thermographic imaging shows a significant correlation with objective hemodynamic measurements on PDDU.

MicroRNA-29b attenuates fibrosis in a rat model of Peyronie's disease

BACKGROUND

Peyronie's disease is characterized by the formation of fibrotic plaques in the penile tunica albuginea. Effective treatments are limited, warranting the investigation of new promising therapies, such as the application of microRNAs that regulate fibrosis-related genes.

OBJECTIVE

We aimed to investigate the therapeutic potential of mimicking microRNA-29b in a fibrin-induced rat model of Peyronie's disease.

MATERIAL/METHODS

The study was designed in two phases. To establish an optimal Peyronie's disease model, rats received either human fibrin and thrombin or saline solutions into the tunica albuginea on days 0 and 5. The animal model validation was done through expression and histopathological analyses, the latest by an experienced uropathologist. After validation, we performed microRNA-29b treatment on days 14, 21, and 28 of the study. This phase had control (normal saline) and scramble (microRNA scramble) groups. The mid-penile shaft was removed on day 30 for histological examination and molecular analyses in both study stages.

RESULTS

The control group displayed typical tunica albuginea histologic architecture in the animal model validation. In Peyronie's disease group, the Hematoxylin and eosin and Masson Trichrome staining methods demonstrated an interstitial inflammatory process with concomitant dense fibrotic plaques as well as disarrangement of collagen fibers. Additionally, we found out that reduced microRNA-29b (p = 0.05) was associated with significantly increased COL1A1 and transforming growth factor β1 genes and proteins (p > 0.05) in the Peyronie's disease group. After treatment with mimic microRNA-29b stimulation, the Hematoxylin & eosin and Masson Trichrome staining revealed a discrete and less dense fibrotic plaque. This result was associated with significantly decreasing expression of COL1A1, COL3A1, and transforming growth factor β1 genes and proteins (p < 0.05).

DISCUSSION

The fibrin-induced animal model showed significant histopathological and molecular changes compared to the Control group, suggesting that our model was appropriate. Previous findings have shown that increased expression of microRNA-29b was associated with decreased pathological fibrosis. In the present study, treatment with microRNA-29b decreased the gene and protein expression of collagens and transforming growth factor β1. This study reveals the therapeutic potential for Peyronie's disease involving molecular targets.

CONCLUSION

MicroRNA-29b application on the rat's tunica albuginea attenuated fibrosis, arising as a novel potential strategy for Peyronie's disease management.

A contemporary assessment of the evaluation and management of patients presenting to a tertiary medical center with Peyronie's disease

Peyronie's disease continues to be poorly understood. We characterize the presenting features of Peyronie's disease within a large cohort and elucidate the factors that correlate with surgical intervention. Univariate and multivariate analyses were performed on 1483 consecutive patients to assess pre-operative predictors of surgical intervention for Peyronie's disease. Overall, 1263 patients met inclusion criteria. Mean age was 55.4 ± 11.1 years with a mean duration of disease at presentation of 33.2 ± 42.5 months. Mean primary curvature was 49.8 ± 20.8°. Primary ventral curvature was present in 11.4% and 36.5% of patient had a multiplanar curvature. During penile duplex ultrasound evaluation indentation/narrowing deformities were appreciated in 76.0%, hourglass deformity in 10.1%, and hinge effect in 33.0% of patients. Calcification was seen in 30.1% of patients. Operative intervention occurred in 35.3% of patients. Degree of primary curvature (1.03 OR, p < 0.001), hourglass deformity (1.82 OR, p = 0.01), decreased tunical elasticity (1.20 OR, p = 0.03), and prior intralesional collagenase clostridium histolyticum injections (2.94 OR, p < 0.001) predicted surgical correction on multivariate analysis. Compared to historical studies, we found a higher incidence of severe degree of curvature (27.5% >60°), indentation deformities, hinge-effect, multiplanar curvature and penile calcifications. Ultimately, predictors of surgical intervention included those with worse erectile function and more severe characteristics.

[Current treatment concepts for Peyronie's disease]

Plastic induration of the penis (PIP, Peyronie's disease) is an acquired and chronic disease of the penis, which is characterized by penile pain, distortion and deformation of the penis as well as the resulting impairments in sexual activity of the patient. The most probable causes are microtrauma and macrotrauma within the tunica albuginea of the corpora cavernosa, which due to an abnormal wound healing subsequently leads to the formation of fibrosis in this region. Various predisposing factors and also a genetic predisposition are discussed. The PIP occurs most frequently in the fifth to sixth decades of life. The prevalence is 0.3-20% depending on the investigated collective and the risk factors present. The PIP is subdivided into an acute inflammatory phase and a chronic postinflammatory phase. Various conservative and surgical treatment options include oral medication, penile traction therapy, intralesional injections and surgical procedures.

The effect of penile traction device in men with Peyronie's disease on penile curvature, penile length, and erectile dysfunction: a systematic review and meta-analysis

Background

Peyronie's disease (PD) results in curvature, pain, and erectile dysfunction (ED). Penile traction devices (PTDs) are a non-invasive treatment option for PD by applying mechanical forces to elicit biochemical responses that reduce curvature and improve penile function. In the present study, we systematically reviewed and analyzed the literature investigating the use of PTD to treat PD.

Methods

We have conducted electronic and manual search strategies within the databases and included articles to find relevant studies. A total of Five studies met all the predefined inclusion criteria and were selected for inclusion in the review. Outcomes assessed are penile length, penile curvature, and erectile function (EF). The study population consisted of patients with PD, the intervention was penile traction therapy (PTT), the comparison was matched placebo or follow-up, and the study design was randomized controlled trials (RCTs) or cohort studies. The Cochrane risk of bias assessed the studies' quality for randomized studies and the Newcastle-Ottawa scale (NOS) for non-randomized observational studies. All statistical analyses were performed using R software. Results were considered statistically significant for P<0.05.

Results

Only five studies met inclusion and exclusion criteria and were published between 2014 and 2021. The sample sizes range [51-110], totaling 419, with a mean of 83.8 patients-the follow-up with a mean of 6.75 months. This meta-analysis evaluated the efficacy of PTD on curvature degree, penile length, and EF in patients. There is a significant positive effect on the curvature degree (P=0.0373), while there is no significant effect on penile length and EF (P=0.5315 and 0.1010), respectively. They are Indicating low heterogeneity with an estimated total heterogeneity of 0. Overall, the available evidence does not support the efficacy of the intervention for penile length or EF.

Conclusions

The current evidence suggests that PTDs can be a safe and effective treatment option for men with PD to reduce penile curvature. However, further research, including more RCTs with extended follow-up periods, is needed to fully understand their efficacy and determine the ideal timing and patient subtypes that would benefit from PTD.

Updated recommendations on the therapeutic role of extracorporeal shock wave therapy for peyronie's disease: systematic review and meta-analysis

BACKGROUND

The therapeutic role of extracorporeal shockwave therapy (ESWT) for Peyronie's disease (PD) has been controversial in a long term. We aimed to further evaluate the therapeutic effect of ESWT for PD on the basis of available high-quality studies.

METHODS

The PubMed, CENTRAL and Embase databases were searched for articles published from January 1st, 2000 to December 31, 2022. Only randomized controlled trials (RCTs) using ESWT to treat PD were included. Meta-analysis and forest plots were carried out using Review Manager 5.4.1 software, and outcomes were reviewed by 2 authors independently. Using the Risk of Bias assessment form (ROB-2) by Cochrane Collaboration for quality assessment. PRISMA 2020 guidelines were used in this article to achieve the quantitative and qualitative synthesis of data.

RESULTS

A total of four RCTs were included. 151 patients in the ESWT group and 150 patients in the control group. The meta-analysis results showed that ESWT could significantly reduce plaque size (OR 2.59, 95%CI 1.15 to 5.85, P = 0.02) and relieve pain (MD -1.55, 95%CI -2.46 to -0.64, P = 0.0008); but it has no significant effect on reducing the penile curvature (OR 1.93, 95%CI 0.87-4.26, P = 0.11) and improving sexual function (MD 2.6, 95%CI -1.63 to 6.83, P = 0.23), there is also no significant difference in complication rates between groups (OR 2.94, 95%CI 0.66 to 13.03, P = 0.16). The risk of bias of results is low. The limitations of this study are that the number of included studies is too small, some experimental outcomes are missing, and the expression of outcomes is not unified.

CONCLUSIONS

For PD, ESWT can be considered as a safe short-term treatment, which can reduce plaque size and relieve pain, but cannot improve penile curvature and sexual function. Its long-term efficacy remains to be discussed.

REGISTRATION NUMBER

PROSPERO (ID: CRD42023436744).

Predictors of hinge effect in patients with Peyronie's disease

BACKGROUND

Patients with Peyronie's disease present with a variety of penile deformities. Those with hinge effect can experience bothersome buckling of the erection and instability during penetrative sex; however, the actual characteristics and clinical implications are not fully understood.

AIM

To determine the factors that cause hinge effect and to assess the role on surgical intervention.

METHODS

This retrospective review included 1223 consecutive patients who were examined by a single surgeon and had a complete penile duplex evaluation with curvature and hinge assessment. Baseline demographics, penile duplex findings, and clinical outcomes were used to assess for predictors of hinge effect.

OUTCOMES

Analyses were performed to assess preoperative predictors of hinge effect and surgical intervention.

RESULTS

Hinge effect was observed at the time of penile duplex Doppler examination in 33% of patients. Circumferential girth discrepancy at point of indentation (odds ratio [OR] 1.82; P < .001), rigidity of erection (OR, 0.82; P = .002), and degree of primary curvature (OR, 1.03; P < .001) predicted the presence of hinge effect. When controlling for rigidity, a girth discrepancy >1 cm did appear to be associated with a hinge.

CLINICAL IMPLICATIONS

Circumferential girth discrepancy >1 cm, regardless of erectile rigidity, can be associated with hinge effect.

STRENGTHS AND LIMITATIONS

As a strength, this study included the largest cohort of patients with Peyronie's disease, all of whom were examined in a rigorous and uniform manner via the same operative counseling. However, the study is limited by its retrospective nature and potential for selection and observer bias, given that the treating physician was also assessing all penile deformities as well as performing operative intervention.

CONCLUSIONS

The presence of hinge effect can cause instability of erections during penetrative sex. Multiple factors may predispose patients to a hinge effect, including the quality of erection and severity of curvature. But when controlling for rigidity, a girth discrepancy >1 cm did appear to be associated with a hinge. While many factors, such as baseline erectile dysfunction and severity of curvature, are important in determining the optimal surgical intervention, assessing for preoperative hinge effect also influenced the surgical approach.

The symptomatic burden of Peyronie's disease at presentation according to patient age: A critical analysis of the Peyronie's disease questionnaire (PDQ) domains

BACKGROUND

Peyronie's disease (PD) has a huge impact on patients' physical and psychological wellbeing.

OBJECTIVES

To investigate whether patients' age has an impact on PD symptomatic burden at first presentation.

MATERIALS AND METHODS

Data from 129 consecutive heterosexual patients seeking first medical attention for PD at a single andrological tertiary-referral centre were collected. All patients completed the International Index for Erectile Function (IIEF) and the PD questionnaire (PDQ). Descriptive statistics were used to compare clinical features between younger (≤40years) and older (>40 years) patients. Multivariable linear model assessed the impact of age, the degree of penile curvature and their impact on PDQ (total scores and its domains), after adjusting for PD duration and IIEF-erectile function domain scores.

RESULTS

Of 129, 24 (18.6%) patients were ≤40 years old. Young patients presented with a less severe curvature than older patients (median [interquartile ranges] 20° [15-36] vs. 50° [40-80]; p = 0.04). However, younger age was associated with higher psychological and physical symptoms, PDQ-penile pain and PDQ-symptom bother scores (Coeff -0.11, -0.21 and -0.17, respectively) (all p < 0.05). Moreover, the greater the degree of curvature, the higher the PDQ-psychological and physical symptoms and the PDQ-symptom bother scores (Coeff. 0.21 and 0.22, respectively; all p < 0.05).

CONCLUSION

Around one in five men seeking first medical help for PD is younger than 40 years at presentation in the real-life setting. PD-related distress varies according to patients' age, with younger men presenting with a greater risk of penile pain and symptom bother despite lower curvature.

Peyronie's Disease: An Outcomes-Based Guide to Non-Surgical and Novel Treatment Modalities

The clinical landscape of Peyronie's disease is everchanging. There has been growing interest in non-invasive therapeutic options that could assist patients with achieving a meaningful reduction in penile curvature without surgical intervention. These therapies are wide-ranging in terms of their mechanisms of action, efficacies, and short- and long-term safety profiles. Recently, an abundance of outcomes literature on longstanding and novel non-surgical treatment modalities has been published. For sexual medicine providers hoping to offer patients the most up-to-date and evidence-based treatments for the management of Peyronie's disease, it can be challenging to gain a thorough understanding of this body of literature. In this clinical management review, the workup and current theories on the pathophysiology of Peyronie's disease are reviewed, and the most recent outcomes data on the currently available non-surgical treatment modalities are presented. With an accurate understanding of the current landscape of Peyronie's disease treatment, sexual health providers will be able to better evaluate and engage in evidence-based shared decision-making with their patients.

The Immunological Microenvironment and the Emerging Role of Stem Cells Therapy in Peyronie's Disease: A Systematic Narrative Review

Current literature has indicated that Peyronie's disease (PD) could be initiated by microtrauma and the subsequent inflammation episodes that follow. PD could be sorted into acute or chronic status, and it can differ when selecting the clinical therapeutics. PD would cause pain and penile deformity to diseased men and impair their erectile function. Occasionally, surgical revision of the penis might be needed to correct the penile curvature. We find that there are limited effective options of intra-lesion injections for the PD plaques. By searching the databases and screening the literature with the PRISMA 2020 guideline, we observed that several preclinical studies that applied stem cell therapy in treating PD were fruitful in the acute phase. Although in the chronic phase of PD, erectile parameters were not significantly improved, and therefore, future studies might be better elevated in certain aspects, such as the sites selected for harvesting stem cells or changing the centrifugation forces. In this review, we concluded the contemporary understanding of inflammatory microenvironments in PD, the stem cell therapy in PD, and our perspectives on future studies. We concluded that there may be great potential in stem cell therapy for treating both acute and chronic phases PD.

Penile Autophotography Underestimates the Degree of Penile Curvature in Peyronie's Disease

BACKGROUND

Penile curvature is the most debilitating symptom of Peyronie's disease (PD); the evaluation of the degree of angulation is essential for planning treatment strategy. However, the most used method of penile at-home autophotography (AHP) is associated with some potential pitfalls and discrepancies compared with different assessment methods.

OBJECTIVE

To compare the degree of penile curvature quantified by AHP and in-office intracavernosal alprostadil injection (ICI) prior to therapy.

DESIGN, SETTING, AND PARTICIPANTS

Data from 55 PD patients of a single tertiary referral center were analyzed. All patients provided standardized AHP of the erect phallus. Clinic-based assessment included ICI with curvature measurement and completion of the International Index of Erectile Function (IIEF-15).

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS

The Wilcoxon and/or chi-square test was used to compare the degree of curvature obtained using AHP and ICI, and to evaluate whether erectile dysfunction was a predictor of a relevant difference of >10° in curvature assessment between AHP and ICI.

RESULTS AND LIMITATIONS

Our study showed a significant (p < 0.001) difference in the degree of penile curvature between AHP (48° [38°; 55°]) and ICI (50° [40°; 65°]). Patients suffering from erectile dysfunction tend to have a higher difference in the degree of penile curvature between AHP and ICI than patients with good erectile function (p < 0.001). Our study is not devoid of limitations. First, we did not use Peyronie's Disease Questionnaire, as suggested by the European Association of Urology guidelines. Second, we did not evaluate inter- and intraobserver variations in the measurements.

CONCLUSIONS

AHP tends to underestimate the extent of penile curvature compared to ICI. Erectile dysfunction is an independent predictor of measurement differences of >10° between AHP and ICI.

PATIENT SUMMARY

It is necessary to evaluate the degree of penile curvature in Peyronie's disease prior to therapy decision. The at-home self-photography underestimates the real degree of penile curvature compared with an erection by in-office penile drug injection. Especially men suffering from erectile dysfunction carry the risk of a high difference in the measured degree of penile curvature, with a potential impact on the further treatment.

Platelet-rich plasma in patients affected with Peyronie's disease

Objectives

The objective of our study is to discover and evaluate the effects of repeated intralesional injections inside the tunica albuginea of platelet-rich plasma (PRP) in the treatment of Peyronie's disease (PD).

Methods

As part of a prospective study over 12 months from February 2020 until February 2021, on Sixty-five patients with Peyronie's disease, and penile curvature between 25 and 45°. Patients were stratified into two groups, the first with a curvature between 25 and 35° and the second between 35 and 45°. Gathered data included patient-demographics, Injection technique, outcomes: both quantitative (curvature assessments) and qualitative (state of erectile function, pain during intercourse), and complications.

Results

Patients in both groups received an average of 6.1 injections of PRP during the study period. Angulation was significantly improved in both groups an average final improvement of 16.88° (SD = 3.35) (p < 0.001) in the first group and 17.27° (SD = 4.22) (p < 0.001) in the second group. Pain during sex decreased from 70.7% to 34.25%, and 55.5% of patients had easier sexual intercourse.

Conclusions

The positive results of our series of treatment for Peyronie's disease by injection of platelet-rich plasma are encouraging both methodologically (simplicity) and clinical (safety and efficacy) as well as patient satisfaction.

Tolerance and efficacy of platelet-rich plasma injections in Peyronie's disease: Pilot study

INTRODUCTION

Platelet-rich plasma (PRP) injections are increasingly proposed for the treatment of Peyronie's disease since the discontinuation of Xiapex® despite poorly understood results.

OBJECTIVES

Evaluation of the tolerance and efficacy of intra-plate PRP injections in patients with Peyronie's disease.

METHODS

Three intra-plate injections of PRP were performed 15 days apart in 17 patients with Peyronie's disease. The Peyronie's Disease Questionnaire (PDQ) and the measurement of the angle of curvature of the erect penis were assessed before treatment and then 1, 3 and 6 months after treatment. Erectile function was assessed by different questionnaires (IIEF-EF, EHS, SEP, sexual discomfort score).

RESULTS

No side effects were noted during the study period. Three months after treatment, all three PDQ domains were significantly improved (P=0.002; P=0.015; P=0.017 respectively). The angle of curvature of the penis was significantly decreased by 11.8° with a mean angle of 40.4° before treatment and 28.6° after (P=0.007). The IIEF-EF score was significantly improved after treatment (mean preoperative value: 10.67) with a gain of 5 points at months 1 and 6 (P=0.01 and P=0.036 respectively) and 7 points at month 3 (P=0.04).

CONCLUSION

Our initial experience suggests that PRP injections for Peyronie's disease are safe. Although the limited data is suggestive of efficacy, a placebo control will be required for confirmation.

A Consistent Lack of Consistency in Defining the Acute and Chronic Phases of Peyronie's Disease: A Review of the Contemporary Literature

INTRODUCTION

Treatment recommendations for Peyronie's Disease (PD) differ based on whether a patient is in the acute/active versus chronic/stable phase of the disease, yet there are no agreed upon criteria for defining these clinical entities.

OBJECTIVES

To review the criteria used to define acute and chronic phase PD in modern PD intervention studies.

METHODS

We performed a search engine review to identify indexed publications for PD intervention studies and review articles / meta-analyses from the year 2011-2020. Outcomes results were catalogued and summarized across articles. As a result of the substantial heterogeneity of outcome measures and follow-up intervals, meta-analytic techniques were not applied to the data analysis.

RESULTS

We identified a total of 104 studies that met inclusion criteria and had available information for review (n = 79 primary intervention studies; n = 25 review articles/meta-analyses/guidelines). Among the queried studies, we were unable to identify a consensus with respect to the criteria used to define acute and chronic phases of PD. 33% of primary intervention studies did not specifically define their criteria for acute and chronic phase PD, despite referencing these populations as part of the inclusion criteria in many instances. Studies used heterogenous criteria including total symptom duration, duration of "stable" symptoms, and presence/absence of pain.

CONCLUSION

Due to varying definitions across the literature, we were unable to create a standardized definition of acute and chronic phase Peyronie's in terms of time. Our findings emphasize the need for greater consensus in defining the treatment cohorts with future studies that assess treatment for men with PD.

Whole-Genome Sequencing Identifies Novel Heterozygous Mutation in ALMS1 in Three Men with Both Peyronie's and Dupuytren's Disease

Peyronie's Disease (PD) is estimated to occur in up to 13% of males and has been associated with Dupuytren's Disease (DD). We identified 3 men with PD/DD and hypothesized that there may be a genetic association between the 2 diseases. Blood samples were collected from the participants and sent for whole genome sequencing. A rare non-synonymous mutation in the ALMS1 gene was identified in 3 men. Interestingly, ALMS1 is associated with TGF-b, and aberrant fibrosis. This pilot study generates the hypothesis that mutations in ALMS1 may predispose patients to development of PD/DD.

Peyronie Disease as a Marker of Inflammation-Is There Hope on the Horizon?

Although the description of Peyronie disease, a connective tissue disorder involving the growth of fibrous plaques in the soft tissue of the penis, is attributed to François de la Peyronie, surgeon to Louis XV of France, there are reports previous to that time. Over the intervening 450 years, a variety of empiric treatments, varying in barbarity, have been proposed. The frequency of this condition and the etiology of the fibrosis are unknown. Quality of life for affected men and their partners is adversely impacted. In this review, the authors summarize the history of the discovery of this condition, review contemporary management approaches, and address the pathophysiology leading to the underlying disordered fibrosis. The potential immunomodulatory role of testosterone as well as inflammatory conditions and environmental stimuli that may provoke fibrosis are also considered. Peyronie disease may be part of a spectrum of fibrotic conditions, including Dupuytren contracture. Treatment strategies to date have focused on reversing fibrosis; work is needed to prevent fibrosis and to accurately document disease prevalence.

A Randomized, Single-Blinded Clinical Trial Evaluating the Effect of Extracorporeal Shockwave Treatment (ESWT) as Add-On Therapy to Vacuum Erectile Device on Peyronie's Disease

Purpose

The aim of this study was to investigate whether ESWT with a higher energy as an add-on therapy to vacuum-pump followed by manipulation exercises could reduce the penile curvature, pain and improve IIEF-5 score.

Materials and Methods

Men aged >18 and <80 years and diagnosed with PD in stable phase with no history of penile surgery or previous ESWT treatment were eligible to participate. They were randomised to either active ESWT (n = 16) or sham ESWT (n = 16). Both groups were treated once a week for five weeks. Each treatment session consisted of 2000 shockwaves at 0.5mJ/mm². All patients in both groups used a vacuum pump followed by manipulation exercises.

Results

Thirty men completed the study protocol. Mean age in the treatment group was 61.7 (SD 8.3) and 63 (SD 7.35) in the control group. After six months, mean change in penile curvature was −12.8 (SD 13) degrees in the treatment group and −6.6 (SD 8.9) in the control group (p = 0.204). Mean IIEF-5 score decreased by 0.17 (SD 3) in the treatment group and 3.06 (SD 5.5) in the control group (p = 0.086) at six-month follow-up. Pain was assessed using both VAS and PDQ and demonstrated no difference between the groups after six months (p = 0.648).

Conclusion

In the treatment group, we observed a greater but non-significant change in penile curvature and no adverse effects.

Penile reconstruction: An up-to-date review of the literature

Objective

: To review the literature on adult penile reconstruction due to Peyronie’s disease, trauma and cosmesis, while emphasising specific surgical techniques and procedures such as phalloplasty, radial forearm free flap reconstruction, and penile transplant.

Methods

: A comprehensive review of the literature for the years 1992–2020 of the PubMed and SpringerLink databases was performed to identify articles on penile reconstruction. Search terms included ‘penile reconstruction’, ‘penile trauma’, ‘phalloplasty’, ‘penile transplant’, and ‘treatment of Peyronie’s’. Relevant articles were selected. All included studies were performed on adults and written in English.

Results

: We were able to identify 46 papers from PubMed and SpringerLink that included the research terms. From these, we included technical details of procedures and gleaned photographs of their works. Additionally, we included photographs from our institution’s own plication surgery cases.

Conclusions

: The field of adult penile reconstruction is performed for a plethora of reasons. From cosmetic to urgent and from routine to complex, it is most certainly a growing subset of Urology that plays a vital role for the men who need it. To our knowledge, this is the most up-to-date review of adult penile reconstruction.

Causal contributors to tissue stiffness and clinical relevance in urology

Mechanomedicine is an emerging field focused on characterizing mechanical changes in cells and tissues coupled with a specific disease. Understanding the mechanical cues that drive disease progression, and whether tissue stiffening can precede disease development, is crucial in order to define new mechanical biomarkers to improve and develop diagnostic and prognostic tools. Classically known stromal regulators, such as fibroblasts, and more recently acknowledged factors such as the microbiome and extracellular vesicles, play a crucial role in modifications to the stroma and extracellular matrix (ECM). These modifications ultimately lead to an alteration of the mechanical properties (stiffness) of the tissue, contributing to disease onset and progression. We describe here classic and emerging mediators of ECM remodeling, and discuss state-of-the-art studies characterizing mechanical fingerprints of urological diseases, showing a general trend between increased tissue stiffness and severity of disease. Finally, we point to the clinical potential of tissue stiffness as a diagnostic and prognostic factor in the urological field, as well as a possible target for new innovative drugs.

The Prevalence and Predictors of Penile Pain in Men with Peyronie's Disease

INTRODUCTION

Penile pain is one of the most stressful symptoms in men with Peyronie's disease (PD).

AIM

To evaluate the prevalence, clinical presentation and risk factors associated with penile pain in men with PD as well as to assess the psychosocial impact.

METHODS

We revised our institution's database of men diagnosed with PD. The information collected included penile pain assessments, and the scores of the PD Questionnaire (PDQ), Self-Esteem and Relationship Questionnaire (SEAR) and Center for Epidemiologic Studies Depression Scale Questionnaire (CES-D). Descriptive and comparative statistics were used. Logistic regression analyses were performed to evaluate predictive factors associated with penile pain.

MAIN OUTCOME MEASURES

Penile pain descriptive assessment and factors associated with penile pain in men with PD. Comparison of SEAR, CES-D and PDQ domain scores of men with and without penile pain.

RESULTS

431 men with PD were included for this analysis with a mean age of 55.9 years. Penile pain was reported by 36.7%; 65.2% of those had painful erection, 7% pain with flaccid state only, and 20% in both stages. The median pain severity was 3 with erection and 1 with flaccid stage. After adjusted logistic regression analyses, advanced age was associated with less pain (OR 0.94, P ≤ 0.001). Men with penile pain had no significant difference in CES-D and SEAR mean scores compared to men without penile pain. The PDQ scores for the physical/psychological symptoms domain and the bother domain were significantly higher in men with penile pain (12 vs 8.7; P < 0.01 and 9 vs 7.1; P < 0.01 respectively). Men with penile pain had a higher rate of clinically significant bother scores than men without penile pain (52% vs 35%, P ≤ 0.001).

CONCLUSION

Penile pain is common in men with PD. It was more common in young men and was associated with physical and psychological bothers in this population. Flores JM, Salter CA, Nascimento B, et al. The Prevalence and Predictors of Penile Pain in Men with Peyronie's Disease. Sex Med 2021;9:100398.

Single-cell Transcriptomics Uncover a Novel Role of Myeloid Cells and T-lymphocytes in the Fibrotic Microenvironment in Peyronie's Disease

BACKGROUND

Peyronie's disease (PD) is an acquired fibrotic disease affecting the penile tunica albuginea that can lead to curvature and deformities, shortening, and erectile dysfunction. Although immunological mechanisms have been suggested for the pathophysiology of PD, these have not been investigated using single-cell transcriptomics.

OBJECTIVE

To investigate the immunological signature of plaques from PD patients using immunohistochemistry (IHC) and single-cell RNA sequencing (scRNA-Seq).

DESIGN, SETTING, AND PARTICIPANTS

Tunica albuginea biopsy was performed in patients undergoing penile surgery for either PD (n = 12) or plication or penile cancer (control, n = 6). The inclusion criteria for PD patients were stable chronic disease (≥12 mo in duration) and no previous penile surgery or intralesional injection therapy.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS

IHC was performed on surgical samples from ten patients with PD and five control subjects. An additional two PD and one control sample were used for scRNA-Seq (droplet-based; 10X Genomics). Cell clusters were visualised using heatmaps and t-distributed stochastic neighbour embedding plots (BioTuring v2.7.5).

RESULTS AND LIMITATIONS

IHC revealed the presence of myeloid dendritic cells (DCs; CD68⁺, TLR4⁺, CD206⁺), cytotoxic T lymphocytes (CTLs; CD3⁺, CD8⁺), and B lymphocytes (CD20⁺) in PD plaques, which were absent in controls. scRNA-Seq yielded results for 3312 PD and 5658 control cells. Cell clusters contained fibroblasts (COL1A2⁺), myofibroblasts (COL1A2⁺, ACTA2⁺), smooth muscle cells (ACTA2⁺, DES⁺), endothelial cells (VWF⁺), myeloid cells (CD14⁺), T lymphocytes (CD3D⁺), and neutrophils (ALPL⁺). Myeloid cell subclustering showed infiltration of monocyte-derived cells; control tissue contained classical DCs and resident macrophages. Lymphocyte subclustering revealed mucosal-associated invariant T (MAIT) cells and CTLs in PD. Differential gene expression suggests an increase in inflammatory and immune responses in chronic PD. The study is limited by the small scRNA-seq sample size (n = 3) for IHC, mitigated by a larger cohort of historic paraffin-embedded samples (n = 15), which showed largely parallel findings. Owing to tissue stiffness and extracellular matrix adhesion, our single-cell yield was lower for PD than for the control sample.

CONCLUSIONS

Our data suggest that even in the chronic PD stage (painless and stable curvature) there is a sustained inflammatory reaction. While vascularisation and collagen production are elevated, the inflammation is driven by specialised monocyte-derived CTL and MAIT cells. These findings could uncover new avenues for medical treatment of PD.

PATIENT SUMMARY

We looked at the role of the immune system in patients suffering from Peyronie's disease, a condition causing shortening and curvature of the penis. We found that even in a stable, chronic stage of the disease, there is activation of the immune system. Our results suggest that there is potential for novel treatments for this condition.

Implications of Calcification in Peyronie's Disease, A Review of the Literature

A common characteristic of Peyronie's Disease (PD) is plaque calcification, which is associated with decreased response to treatments and higher rates of surgical intervention. Despite its prevalence in the PD population, the literature on plaque calcification is limited. While the diagnosis of PD is mostly clinical, imaging modalities such as ultrasound can be used to identify plaque calcification. The proper identification of plaque calcification is crucial for guiding management and setting therapeutic expectations for patients with PD. Herein we discuss what is known about PD plaque calcification, including epidemiology, etiology, diagnosis, and management.

Role of neutrophil-to-lymphocyte and platelet-to-lymphocyte ratios in Peyronie's disease: a new diagnostic approach to predict the stage of the disease?

Neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) have been associated with multiple entities and several types of cancers. They can be assumed as markers of inflammatory imbalance. The objective of this study is to evaluate the NLR and PLR in Peyronie's disease (PD) and to establish a comparison of its values in the acute and chronic stages. We recruited patients with PD from March 2018 to March 2019. The patients enrolled underwent medical and sexual history as well as a physical examination. The values of blood count of each patient were collected both in the acute and chronic stages. Wilcoxon test was used to compare the acute and chronic stage ratios. Kruskal–Wallis test was carried out to evaluate the impact of treatments on the ratios. To identify cutoff values, we used sensibility and specificity tables and receiver operating characteristic (ROC) curves. A total of 120 patients were enrolled. Their mean age was 55.85 (range: 18–77) years and the mean penile curvature was 48.43° (range: 10°–100°). In the acute stage, the mean NLR was 2.35 and the mean PLR was 111.22. These ratios, in the chronic stage, were 1.57 and 100.00, respectively. Statistically significant differences between acute and stable stages for both indices were found (NLR: P < 0.0001; PLR: P = 0.0202). The optimal cutoff for classification in acute or stable stage was 2 for NLR and 102 for PLR. According to our results, with an ordinary blood count, we could have important indications regarding the disease stage of the patient, and consequently on the most appropriate type of therapy to choose.

Penile fracture in a Peyronie’s disease patient: a case report

Background

Penile curvature in men with Peyronie’s disease (PD)—caused by tunica anchoring plaques with loss of focal fiber elasticity—theoretically increases the risk of penile fracture during sexual activity. Penile fracture is the result of tearing of the tunica albuginea of one or both corpora cavernosa, usually during sexual intercourse, and is among the most serious urological emergencies. Generally, a patient presented to a surgical emergency within 48 h of injury can be handled successfully with minimum complications. Immediate surgical treatment is the current standard of care and has a relatively low risk of late complications.

Case presentation

We present a case of penile fracture in a male with a history of PD referred to the emergency department with severe pain. Clinical history assessment and physical examination revealed a penile fracture with underlying PD. He underwent emergency surgical exploration via subcoronal incision. Penile plication was not necessary for our case because the angulation of the penis was less than 15° after examination of artificial erection.

Conclusion

Penile fracture in a patient with underlying PD is a rare urological emergency that should be treated surgically with fracture repair as early as possible. Penile plication might be necessary in severe cases (angulation > 60°).

Efficacy of Collagenase Clostridium histolyticum (Xiapex®) in Patients with the Acute Phase of Peyronie's Disease

BACKGROUND AND OBJECTIVE: Plaque formation ordinarily takes place in the acute phase of Peyronie's disease. There is no unanimous consent regarding the management of the acute phase of Peyronie's disease. The objective of this study was to evaluate the advantages of using a single intralesional injection of collagenase Clostridium histolyticum in patients with the active phase of Peyronie's disease and to assess its effect on disease progression by reducing penile curvature and ameliorating pain during sexual intercourse.

METHODS

Sexually active men aged older than 18 years with the acute phase of Peyronie's disease were enrolled. All patients received treatment with a single intralesional injection of collagenase Clostridium histolyticum. The primary outcome of the study was the change in penile curvature after treatment while secondary outcomes were the change in sexual function (International Index of Erectile Function [IIEF-5]) and in the Peyronie Disease Questionnaire (PDQ) and its sub-scores, PDQ-PS (psychological symptoms), PDQ-PP (penile pain) and PDQ-BD (bother disease).

RESULTS

Overall, 74 patients were enrolled. Mean penile curvature at baseline was 41.1° ± 12.2°. The mean changes before and at the 3-month evaluation in terms of penile curvature, Visual Analog Scale score at rest, and Visual Analog Scale score during intercourse were - 19.3 ± 8.4 (p < 0.0001), - 0.8 ± 1.1 (p < 0.0001) and - 3.8 ± 0.9 (p < 0.0001) with the benefit persisting also after 6 months. Moreover, improvements of mean IIEF-5 score (1.1 ± 0.9, p = 0.03; 0.9 ± 0.5, p = 0.02), PDQ-PS (- 2.7 ± 2.2; - 2.5 ± 2.0, p = 0.01), PDQ-PP (- 1.2 ± 1.6; - 1.1 ± 1.2, p = 0.02) and PDQ-BD (- 3.8 ± 3.4; - 3.5 ± 3.1, p = 0.001) were observed 3 and 6 months after the end of treatment, respectively. At the multivariable regression analysis, the time since disease onset (modelled with non-linear terms) and baseline curvature were independently associated with the degree of curvature improvement (coefficient: 0.30; 95% confidence interval 0.16-0.44) after a single intralesional injection (all p < 0.03).

CONCLUSIONS

Although intralesional therapy with collagenase Clostridium histolyticum is not yet indicated for the acute phase of Peyronie's disease, these preliminary results suggest the effectiveness of this minimally invasive option by improving penile curvature and IIEF-5 and PDQ scores.

Defining the impact of Peyronie's disease on the psychosocial status of gay men

BACKGROUND

Little sexual health research has been conducted in gay men. Anecdotally, this population seems to experience more bother related to Peyronie's disease (PD).

OBJECTIVES

To examine the impact of PD on psychosocial factors in gay vs straight men.

MATERIALS AND METHODS

All PD patients who were seen in the sexual medicine clinic were included. They completed three instruments: the PD questionnaire (PDQ), Self-Esteem and Relationship (SEAR) questionnaire, and a depression questionnaire (CES-D). We described demographics and sexual variables by sexual orientation. We then compared PDQ items and summary scores by sexual orientation, using a series of independent samples t tests.

RESULTS

34 consecutive gay and 464 straight men were included. Age and baseline characteristics were similar between the two cohorts, with the exception that fewer gay men were partnered (56% vs 87%, P < .01), and those with a partner had a shorter relationship duration: 109 ± 9 months vs 262 ± 175 months, P < .01. For the SEAR questionnaire, gay men demonstrated a more significant psychosocial impact of PD overall with lower SEAR sums (41 vs 57, P = .01) and a lower sexual relationship subdomain score (28 vs 47, P < .01). 41% of gay men vs 26% of straight men had CES-D scores consistent with depression as defined by a score of ≥16 (P = .09). In the PDQ domains, gay men scored less favorably with regard to bother scores (7 vs 5, P = .03) and pain scores (8 vs 4, P = .04).

DISCUSSION

Gay men with PD experience significantly more psychosocial impact as evidenced by less favorable SEAR sum and sexual relationship scores, CES-D scores, and PDQ pain and bother domain scores.

CONCLUSION

The psychosocial impact of PD is significant in all men, but it appears to be greater in gay men.

Application of Botulinum Neurotoxin in Male Sexual Dysfunction: Where Are We Now?

INTRODUCTION

Botulinum neurotoxin (BoNT) is a recognized therapeutic agent of modern medical care, routinely used to treat medical conditions affecting a variety of organ systems including the musculoskeletal, integumentary, and urological domains. Ongoing research is exploring BoNT's potential role as a therapeutic agent for a variety of male sexual pathologies.

OBJECTIVE

To review and analyze the literature regarding BoNT as a treatment option for male sexual dysfunction.

METHODS

A PubMed search was performed for English-language articles in peer-reviewed journals between 1970 and 2019 (with one article from 1897). Relevant articles referenced within these texts were also included. One article did not have an accompanied English full-text available. The following search terms were used: "Botox", "Botulinum toxin", "Botulinum toxin A", "Onabotulinum A", "Abobutlinum A", "BoNT", "BoNT-A", "Male sexual health", "Male sexual pathology", "Peyronie's disease", "Premature ejaculation", "Scrotal Pain", "Penile Retraction", "Scrotox", "Erectile Dysfunction", and "Botox in Urology".

RESULTS

There is interest in the potential role of BoNT in the treatment of male sexual pathologies. We identified studies that used BoNT to treat chronic scrotal content pain, premature ejaculation, erectile dysfunction, Peyronie's disease, penile retraction, and more. However, despite preclinical/clinical data indicating some potential efficacy and safety in these settings, a lack of robust clinical trial data has resulted in no current Food and Drug Administration-approved indications for the use of BoNT in the treatment of male sexual pathology. As a result, much of the current use of BoNT by today's providers is "off-label," and ongoing clinical trials aim to further elucidate the potential role of this therapeutic agent.

CONCLUSION

Current data suggest that BoNT could have a potential role as a treatment option for certain types of male sexual pathologies. However, more randomized controlled trial data regarding its long-term safety and efficacy are necessary before a widespread clinical adoption can take place. Reddy AG, Dick BP, Natale C, et al. Application of Botulinum Neurotoxin in Male Sexual Dysfunction: Where Are We Now?. J Sex Med 2021;9:320-330.

Treatment of peyronie's disease with combination of clostridium histolyticum collagenase and penile traction therapy: a prospective, multicenter, single-arm study

The aim of this paper is to analyze our experience with intraplaque administration of collagenase from Clostridium Histolyticum (CCH) together with penile modeling for selected patients with Peyronie's disease (PD). We conducted a prospective, multicenter, single-arm study. Patients were included from October 2015 to August 2019. We carried out the I + E PROTOCOL (IMPRESS + extender). Each cycle involved administration of two injections of CCH separated 24-72 h, up to a maximum of four cycles. 24-48 h after injection patients underwent penile modeling maneuvers with the use of a PTD at home for at least 4 h a day. After each cycle, penile curvature was evaluated by the Kelami test. Mean pretreatment curvature was 57° (30-100). Eighty-seven patients underwent at least a single cycle and were eligible for analysis. Mean number of cycles administered was 2. Final average curvature after treatment, regardless of the number of cycles was 34°, with a mean reduction in curvature of -23.29° (-41%). Across the first three cycles we found statistically significant differences in the means in terms of the degrees of curvature after each cycle (p < 0.05), however this was not maintained in the fourth cycle. Statistical significance was also found when comparing the initial and final curvature after the complete treatment. We can conclude that treatment with CCH for PD is safe and effective. The concomitant use of CCH and PTT may limit the number of treatment cycles necessary to optimize outcomes when compared with CCH alone.

Long-term outcomes of surgery for Peyronie's disease: focus on patient satisfaction

Immediate outcomes of surgery for Peyronie's disease (PD) are fairly easy to analyze. However, it is the patient-reported long-term outcomes which eventually determine the success of PD treatment. The goal of this observational study was to evaluate patients' satisfaction with results of surgical treatment for PD at long-term follow-up. The primary outcome was the proportion of patients who were completely satisfied with their erectile function and penile appearance. We retrospectively identified 374 patients who underwent surgery for PD (median follow-up: 9.5 years) and attempted to invite them for follow-up visit; 342 patients were available for follow-up. Only 285 (83.3%) were sexually active. Among all patients, 197 (57.6%) were completely satisfied with penile appearance; among sexually active patients, 139 (40.6%) were completely satisfied with their erections. Only 101 patients (29.5%) were completely satisfied with penile appearance and erectile function. Logistic regression analysis revealed preoperative IIEF-EF score (OR = 1.668 per 1 point; 95% CI 1.469-1.894), tunica albuginea plication (OR = 5.599; 95% CI = 1.014-30.92), use of saphenous vein (OR = 8.517; 95% CI = 2.491-29.115), and cadaveric pericardium (OR = 61.388; 95% CI = 7.674-491.11) as significant predictors of satisfaction with erectile function. Severity of curvature (OR = 0.926 per 5°; 95% CI = 0.907-0.946) and tunica plication (OR = 0.117; 95% CI = 0.019-0.738) were negative predictors of satisfaction with penile appearance. Preoperative IIEF-EF (OR = 1.497 per 1 point; 95% CI = 1.322-1.694), severity of penile curvature (OR = 0.967 per 5°; 95% CI = 0.95-0.983), and use of pericardium allograft (OR = 10.728; 95% CI = 1.363-84.46) were predictors of both endpoints (satisfaction with erectile function and cosmesis). Despite excellent surgical outcomes in PD, patients' satisfaction with penile appearance and erectile function is far from absolute and depends on many patient-related and treatment-related factors.

[Non-surgical management of Peyronie's disease: State of current knowledge]

BACKGROUND

Peyronie's disease is an inflammatory disorder of the penis, where scar tissue creates a plaque at the level of the albuginea, limits its extension, and leads to a bent and shorter penis during erections. There are no international standards for the evaluation and the treatment of the disease. The aim of this article is to review the current knowledge about the management of Peyronie's disease and to suggest an algorithm to help physicians evaluate and manage this condition.

MATERIAL AND METHODS

A literature review was conducted through PubMed database following PRISMA guidelines using the Mesh terms: Peyronie, disease, treatment and diagnosis. Results are presented in a descriptive manner.

RESULTS

Multiple treatment strategies have been proposed, but no conclusive randomized clinical trial is done to assess their efficacies. The oral treatment was shown to be more beneficial in the setting of a multi-modal approach to treat the acute phase. The non-steroidal anti-inflammatories and the potassium para-aminobenzoate are superior to the other molecules of oral therapy for pain management. Local treatment with topical verapamil, iontophoresis and intra-lesional injection of verapamil, interferon alfa-2b and collagenase clostridium histolyticum (CCH) revolutionized the management of the disease by the modification of the plaque size and angulation. Alternative treatments using extra-corporeal shock wave or traction devices are promising. Intra-lesional injection of CCH is the only therapy approved by the Food and Drug Administration for this condition after the stabilization of the disease. The channeling of the plaque before CCH injections is making better results than the initial protocol, concerning angulation improvement.

CONCLUSION

Multiple therapeutic strategies exist for the management of the Peyronie's disease, but they lack evidence based data. Further randomized clinical trials are needed to evaluate the current practices and to study more efficient treatments.

Peyronie's disease: Contemporary evaluation and management

Peyronie's disease is a common yet poorly understood condition characterized by penile pain, curvature, sexual dysfunction and psychological bother. Peyronie's disease represents a penile wound healing disorder, and is thought to arise from exuberant scarring in response to penile trauma in genetically predisposed men. In the absence of active treatment, the majority of men experience stable or worsening symptoms, with few reporting spontaneous resolution in penile curvature or other deformity. In contrast, penile pain improves or resolves in the majority of men. Treatment options vary based on symptom severity and stability. Several oral therapies are commonly prescribed, although to date there are no strong data to support any oral agents as monotherapy for Peyronie's disease. Other options including penile traction therapy and intralesional injections result in modest improvements for many patients, particularly when used early after symptom onset. Penile straightening through approaches, such as penile plication and plaque incision or partial excision and grafting, represent the most rapid and reliable approach to correct penile curvature once the symptoms have stabilized. Side-effects vary based on the type of surgery carried out, and include penile shortening, sensation changes and erectile dysfunction in the minority of men. In patients with drug refractory erectile dysfunction and Peyronie's disease, placement of a penile prosthesis will address both issues, and is associated with high levels of patient satisfaction. The current review provides a practical approach to the modern evaluation and management of patients presenting with Peyronie's disease.

Long-term patient-reported outcomes in men with Peyronie's disease undergoing nonsurgical and nonintralesional injection management

Peyronie's disease (PD) has a negative impact on overall quality of life for many patients and their partners. There is a significant portion of patients who elect noninvasive therapy and in this scenario we have little data with which to counsel patients. We aim to evaluate long-term patient-reported outcomes in a cohort of men with PD who elected conservative treatment. We identified all males with a diagnosis of PD evaluated at our institution by a single provider between May 2012 and January 2018. We excluded men who were <18 years old or had undergone surgical or intralesional injection (ILI) treatments. A PD-specific questionnaire was sent to those who met our inclusion criteria. 88/514 patients completed the survey and met the inclusion criteria. Penile curvature subjectively improved in 49%, remained stable in 34%, and worsened in 17%. Penile shortening was reported in 89% of patients. Penile shortening subjectively improved in 27%, remained stable in 59%, and worsened in 14%. Roughly 60% reported worsened intercourse satisfaction and erectile function. 60% reported that PD had negatively impacted their self-esteem and 69% felt that PD negatively impacted their sexual partner. Patients who utilized penile traction therapy (PTT) were significantly more likely to report improvements in penile curvature, shortening, and ability to engage in penetrative intercourse. Our survey provides important data on patient-reported outcomes in men with PD electing nonsurgical and non-ILI interventions. Although 49% of men noted at least a mild subjective improvement in their curvature over time, a majority had declining erectile function, decreased intercourse satisfaction, and psychosocial distress. These data can be used when counseling patients with a new diagnosis of PD who are considering treatment options.

Noninvasive Treatment Options for Peyronie's Disease

INTRODUCTION

Evidence for noninvasive management of Peyronie's disease contains many options with varying levels of evidence for each. Many first-line treatments recommended by urologists lack strong evidence for their use.

AIM

We summarize the noninvasive (oral medications, topical medications, traction, vacuum erection devices, extracorporeal shock wave therapy, intracavernosal injections and electromotive therapy) treatment options for Peyronie's disease and provide the levels of evidence for each.

METHODS

A literature search of PubMed, EMBASE, Cochrane Library, and ClinicalKey databases was conducted, current up to April 2019.

MAIN OUTCOME MEASURE

For each treatment modality, we measured level of evidence, change in penile curvature, change in erectile function, the percentage of patients with improved angulation, and pain scores.

RESULTS

There is weak evidence to support the use of oral or topical medications. Higher levels of evidence exist for intracavernosal injections and extracorporeal shock wave therapy and may be helpful in certain patient populations.

CONCLUSION

The mechanisms behind Peyronie's disease are not fully understood. Penile injections provide the highest quality of evidence for noninvasive treatment. Ory J, MacDonald L, Langille G. Noninvasive Treatment Options for Peyronie's Disease. Sex Med Rev 2020;8:603-614.

Dorsal Dupuytren's disease: a systematic review of published cases and treatment options

Dorsal lesions in Dupuytren's disease are rare and data concerning their epidemiology and management are sparse. We conducted a systematic review to summarize reported cases of dorsal Dupuytren's disease. Pubmed, Cochrane, and Embase databases were searched from 1893 to 2018, and 17 articles were selected (525 patients). The male to female ratio was 3.8:1. The dorsal disease was bilateral in 225 patients (50%). The index was the most commonly affected finger (48 patients). The proximal interphalangeal joint was the most commonly affected (484 cases). The most frequently reported lesions were knuckle pads (503 patients), dorsal nodules between interphalangeal joints (14 patients), boutonnière deformities (12 patients), and swan-neck deformities (2 patients). Nearly half of the included patients were treated surgically. Postoperative functional result depended on the treated lesion. Most of the included studies had a low level of evidence. Higher-quality studies are necessary to confirm our findings.

Negative Self-Perception and Self-Attitude of Sexuality Is a Risk Factor for Patient Dissatisfaction Following Penile Surgery with Small Intestinal Submucosa Grafting for the Treatment of Severe Peyronie's Disease

OBJECTIVE

To assess patient satisfaction with surgical outcome, body related self-perceptions, self-attitudes of sexuality, and health related quality of life after penile surgery with small intestinal submucosa (SIS) grafting for the treatment of severe Peyronie's disease (PD).

MATERIAL AND METHODS

This retrospective study included 82 patients, who were treated with SIS grafting for severe PD between 2009 and 2013 at the University Medical Center Hamburg-Eppendorf. Patients were asked to complete standardized questionnaires including the International Index of Erectile Function Erectile Function domain (IIEF-EF), Short-Form (SF)-8 Health Survey, and Frankfurt Body Concept Scale-Sexuality (FKKS-SEX).

RESULTS

Follow-up was available in 58 (69.9%) patients. SIS grafting resulted in subjective straightening of the penis in 53 (91.3%) patients. After a mean follow-up of 28.9 ± 16.5 months, 24 (41.4%) patients were satisfied or very satisfied with surgical outcome. Postoperatively, the mean FKKS-SEX was 23.5 ± 5.9. In total, 36 (62.1%), 18 (31%), and four (6.9%) patients had FKKS-SEX scores corresponding to positive, neutral, and negative self-perception and self-attitude of sexuality, respectively. The mean postoperative SF-8 was 15.2 ± 6.4. Compared to the mean for German controls, patients achieved lower mean scores in the domains social functioning (50.4 ± 7.1), mental health (49.5 ± 9.2), and emotional roles (48.5 ± 6.8). Subjective shortening of the penis (Odds ratio (OR): 2.0), negative body related self-perceptions, and self-attitudes of sexuality (OR: 3.6) as well as IIEF-EF score (OR: 0.9) were risk factors for patient dissatisfaction (p-values ≤ 0.02).

CONCLUSION

A relevant number of patients is not satisfied with surgical outcome after SIS grafting for the treatment of severe PD. Subjective shortening of the penis, negative body related self-perceptions, and self-attitudes of sexuality as well as IIEF-EF score were risk factors for patient dissatisfaction.

Clinical characteristics and surgical outcomes in men undergoing tunica albuginea plication for congenital penile curvature who present with worsening penile deformity

PURPOSE

Men with congenital penile curvature (CPC) can develop new onset worsening of their lifelong curvature. We sought to evaluate clinical characteristics and postoperative outcomes after tunica albuginea plication (TAP) in patients presenting with CPC who reported new onset worsened curvature (CPC-WC), and compare these with patients reporting stable lifelong curve ("CPC-only").

METHODS

A retrospective review of demographics, history/exam findings, and postoperative outcomes for patients with CPC who underwent TAP from 2012 to 2018 was performed. Patients were differentiated based on whether or not they reported new onset worsening of their penile curvature preoperatively (CPC-WC versus CPC only). Statistical analysis was performed to identify differences in clinical characteristics and postoperative outcomes after TAP.

RESULTS

60 patients were included [CPC only (n = 39) and CPC-WC (n = 21)]. Mean curvature was 62° (SD 23). CPC-WC patients were older [median 34 years (IQR 27:52) versus 24 years (IQR 20:34); p = 0.004], and more likely to report penile shortening and psychological bother (p < 0.05). On physical examination, CPC-WCs were more likely to have a discrete palpable tunical scar and diminished penile elasticity (p ≤ 0.0002). With median follow up of 12 months, satisfactory straightening with TAP was reported in 56/60 patients (93%) including 35/39 (90%) CPC only and 21/21 (100%) CPC-WC.

CONCLUSIONS

In men undergoing TAP for CPC, we found that 35% reported new onset worsening of their original curvature preoperatively. These patients were older and more likely to report penile shortening or exhibit palpable tunical scarring with decreased elasticity on examination compared to those with lifelong stable curvature. Regardless, TAP resulted in satisfactory penile straightening in the majority of patients.

Anti-fibrotic effect of mycophenolate mofetil on Peyronie's disease experimentally induced with TGF-β

The aim of the present study was to evaluate the histological, histochemical, and stereological changes caused by mycophenolate mofetil (MMF) on the tunica albuginea of rat penises submitted to an injection of transforming growth factor beta (TGF-β) for the induction of Peyronie's disease (PD). Twenty adult male Wistar rats were divided into four groups: Control group; TGF-β group (TGF-β injection); MMF-7d group (treated with MMF 7 days after induction with TGF-β); and MMF-30d group (treated with MMF 30 days after induction with TGF-β). The steorological evaluation included the relative volume of different types of connective fibres of the tunica albuginea. The histochemical analysis revealed the fragmentation and degradation of elastin in the tunica albuginea. This process was partially reversed in the MMF-7d group and a situation very close to normality was observed in the MMF-30d group. In the collagen III/collagen I ratio it was observed increase in this ratio in the TGF-β (59.4 ± 5.53) and MMF-7d (49 ± 18.2) groups and a decrease in the MMF-30d group (28.7 ± 4), approaching normality. The injection of TGF-β promoted fibrotic alterations in the penile tunica albuginea in Wistar rats corresponding to PD. In this model, MMF acts as a regenerating anti-fibrotic agent.

Peyronie's disease and testosterone deficiency: Is there a link?

INTRODUCTION

Peyronie's disease (PD) and testosterone deficiency (TD) impact men at the same stage of life and can ultimately contribute to erectile dysfunction. There is speculation that low levels of testosterone (T) may predispose men to penile fibrosis; however, there is no published, up-to-date review summarizing the current evidence. Therefore, we conducted a narrative review of the literature exploring the relationship between PD and TD.

METHODS

A comprehensive systematic search of existing literature of five online databases from June 1990 to June 2018 examining the relationship between PD and TD was conducted. The Cochrane risk-of-bias tool for randomized trials and the risk-of-bias assessment tool for cohort studies were used to evaluate the quality of studies.

RESULTS

Six studies were identified (n = 675). Overall, five studies supported the link between PD and TD by demonstrating relationships in PD patients with low total T, free T, bioavailable T, greater penile curvature, and plaque development. However, one study demonstrated no connection between the conditions. The literature is restricted by small studies with methodological flaws.

CONCLUSION

There are a number of mechanisms to support the link between TD and PD. The literature on the topic is limited by small studies which are overall conflicting. The findings of this work suggest the need for larger, prospective studies to clarify the role of TD in the development, evaluation, and treatment of PD. Establishing such a relationship could change management of PD as a diagnosis of PD may encourage clinicians to evaluate a patient's testosterone levels.

Characterization of Septal and Punctate Scarring in Peyronie's Disease

OBJECTIVE

To characterize patients with isolated septal scarring (ISS) and punctate scarring (PS) in Peyronie's disease (PD) and to highlight the importance of duplex ultrasonography in the workup of patients with PD.

MATERIALS AND METHODS

Data from all men undergoing duplex ultrasonography at London Health Sciences Center for PD or erectile dysfunction over a 3-year period were retrospectively reviewed.

RESULTS

Our cohort included 722 patients with duplex ultrasound. ISS were demonstrated in 217 patients (30%), and PS in 197 (27%), with 72 (33%) and 148 (75%), respectively, having a normal physical examination. In both ISS and PS groups, more than half of patients also had associated erectile dysfunction. Predictive factors for ISS on multivariate analysis included trauma history (odds ratio [OR] 1.90, P = .04) and age (OR 1.02, P = .01). Patients with ISS were more likely to have dorsal curvature (OR 3.81, P <.01).

CONCLUSION

Limited data exist in the literature regarding ISS and PS in PD. Our study illustrates that one-third of ISS and three-quarters of PS would have remained unrecognized without duplex ultrasonography, and it highlights its importance in the workup and subsequent management of these patients. Further studies are needed to better understand and to determine the at-risk patient and the associated clinical implications of ISS and PS, and to ultimately provide optimized and individualized management strategies.

Clinical Factors Negatively Impacting Sexual Relationships in Men With Peyronie's Disease

Here, we sought to identify clinical factors associated with a negative impact on the relationships patients with Peyronie's disease (PD) have with their partners. During initial consultation, a detailed sexual questionnaire was administered, which included a question on whether or not PD negatively impacted the current sexual relationship. More than half (146/242; 60.3%) of patients reported that PD negatively impacted their sexual relationship. On multivariate analysis, penile shortening, partner pain with intercourse, and shorter relationship duration were associated with a negative relationship effect. We did not identify significant differences in negative relationship effects based on objective physical examination findings including penile curvature, calcification, hourglass deformity, or penile length.