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OBJECTIVE: To describe the evidence of Platelet Rich Plasma (PRP), Stem cells therapy (SCT) and Extracorporeal shockwave therapy (ESWL) for the treatment of Peyronies disease (PD), including information from the main urological society guidelines. MATERIALS AND METHODS: A literature review of PubMed articles published between 2000 and 2023 was conducted, utilizing keywords such as "Peyronie's Disease", "Penile curvature", "Platelet Rich Plasma", "Stem cells", and "Extracorporeal shockwave therapy". Only full-text articles in English were included, excluding case reports and opinions. RESULTS: A considerable number of clinical trials were conducted using PRP penile injections for therapy of PD, showing reduction of curvature, plaque size and improvement in quality of life. Preclinical studies in rats have shown the potential benefit of adipose-derived stem cells, with improvements in erectile function and fibrosis. Human studies with mesenchymal stem cells demonstrated promising results, with reduction of curvature and plaque size. ESWL effects on PD were investigated in randomized clinical trials and demonstrated no significant impact in curvature or plaque size, but reasonable effect on pain control. CONCLUSION: Restorative therapies has emerged as an innovative treatment option for PD and the results from current studies appear to be promising and demonstrated good safety profile. Unfortunately, due to scarce evidence, PRP and SCT are still considered experimental by American Urological Association (AUA) and European Association of Urology (EAU) guidelines. ESWT is recommended, by the same guidelines, for pain control only. More high-quality studies with long-term follow-up outcomes are needed to evaluate efficacy and reproducibility of those therapies.
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INTRODUCTION: Restorative therapies (RT(s)), including low-intensity shockwave therapy (Li-SWT) and platelet-rich plasma (PRP), aim to restore natural erectile function. Many clinics offer these therapies for erectile dysfunction (ED) and Peyronie's disease (PD) with direct-to-consumer (DTC) marketing. This study sought to investigate the landscape of RTs within Canadian clinics. METHODS: Online searches were made to identify clinics offering Li-SWT and/or PRP as an RT for treating ED and PD in Canada. Public websites were analyzed, followed by calling clinics for data on cost, treatment protocols, clinic ownership, success rates, and adjunctive therapies. RESULTS: A total of 107 clinics were identified online, with a 68.2% call response rate (n=73). Of the respondents, 56 and 40 clinics provided Li-SWT and PRP therapies, respectively, with 23 clinics offering both. All clinics reported using RTs for ED, with 21 clinics offering Li-SWT and 22 clinics providing PRP for PD. Forty-three clinics provided costs and protocols for Li-SWT, while 33 clinics did so for PRP. The average cost + standard deviation (CAD) of six sessions of Li-SWT was $2167.24+936.11 and one shot of PRP was $1478.68+591.98. Most (60.3%, n=44) clinics reported physician ownership, with a majority (n=28) being family medicine trained. Seven clinics did not provide data and 22 were non-MD-owned. Ten clinics provided success rates, with an average of 87.3%. CONCLUSIONS: Despite limited data supporting their routine clinical use, many clinics across Canada offer RTs for ED and PD with varying treatment protocols and increased costs. Further research is required to evaluate the efficacy of RT for ED and PD.
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Introduction: Erectile Dysfunction (ED) is a common challenge post Radical Prostatectomy (RALP), affecting men's sexual health after undergoing definitive cancer therapy. Despite employing nerve-sparing techniques, ED remains a prevalent issue in this population. Studies indicate that approximately 70%-85% of men experience varying degrees of ED following RALP. The existing treatment landscape for post-RALP-ED presents limitations, and a discernible knowledge gap persists. To address this, our study aims to investigate the efficacy of Shockwave Therapy (SWT) as a potential intervention for managing ED after RALP. Methods: This prospective, randomized, sham-controlled clinical trial aims to recruit 189 eligible patients post-RP and assess the effects of SWT. Comprehensive screening, including medical history, physical examinations, and biochemical evaluations, will be conducted to confirm eligibility. The intervention involves utilizing a device to administer focal shockwaves targeted at cavernosal tissue. Safety measures include continuous monitoring for adverse events and rigorous reporting protocols. The primary endpoint assesses changes in participants' ability to engage in penetrative intercourse from baseline to study completion, while secondary endpoints encompass various measures of erectile function, including questionnaire-based assessments, ultrasound parameters, and clinical outcomes. Results: Statistical analysis, encompassing ANOVA for continuous variables and Fisher's exact test for categorical ones, will evaluate demographic characteristics, baseline data, and primary as well as secondary outcomes for statistical significance. Detailed analysis of trends, subgroup comparisons, and treatment effects will provide a comprehensive understanding of the impact of SWT on post-RP ED. Conclusion: This study protocol represents a rigorous investigation into the potential therapeutic role of SWT in managing post-RP ED. The outcomes from this study aim to contribute valuable insights into the efficacy, safety, and potential improvements in erectile function following SWT, providing significant guidance for future interventions aimed at addressing this challenging condition affecting men's health and quality of life.
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The proliferation of microplastics (MPs) represents a burgeoning environmental and health crisis. Measuring less than 5 mm in diameter, MPs have infiltrated atmospheric, freshwater, and terrestrial ecosystems, penetrating commonplace consumables like seafood, sea salt, and bottled beverages. Their size and surface area render them susceptible to chemical interactions with physiological fluids and tissues, raising bioaccumulation and toxicity concerns. Human exposure to MPs occurs through ingestion, inhalation, and dermal contact. To date, there is no direct evidence identifying MPs in penile tissue. The objective of this study was to assess for potential aggregation of MPs in penile tissue. Tissue samples were extracted from six individuals who underwent surgery for a multi-component inflatable penile prosthesis (IPP). Samples were obtained from the corpora using Adson forceps before corporotomy dilation and device implantation and placed into cleaned glassware. A control sample was collected and stored in a McKesson specimen plastic container. The tissue fractions were analyzed using the Agilent 8700 Laser Direct Infrared (LDIR) Chemical Imaging System (Agilent Technologies. Moreover, the morphology of the particles was investigated by a Zeiss Merlin Scanning Electron Microscope (SEM), complementing the detection range of LDIR to below 20 µm. MPs via LDIR were identified in 80% of the samples, ranging in size from 20-500 µm. Smaller particles down to 2 µm were detected via SEM. Seven types of MPs were found in the penile tissue, with polyethylene terephthalate (47.8%) and polypropylene (34.7%) being the most prevalent. The detection of MPs in penile tissue raises inquiries on the ramifications of environmental pollutants on sexual health. Our research adds a key dimension to the discussion on man-made pollutants, focusing on MPs in the male reproductive system.
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INTRODUCTION: Obstructive azoospermia occurs when there is a blockage in the male reproductive tract, leading to a complete absence of sperm in the ejaculate. It constitutes around 40% of all cases of azoospermia (1, 2). Blockages in the male reproductive tract can arise from either congenital or acquired factors, affecting various segments such as the epididymis, vas deferens, and ejaculatory ducts (3). Examples of congenital causes encompass conditions like congenital bilateral absence of the vas deferens and unexplained epididymal blockages (4). Acquired instances of obstructive azoospermia may result from factors like vasectomy, infections, trauma, or unintentional injuries caused by medical procedures (5). This complex condition affecting male fertility, presents two main treatment options: microsurgical reconstruction and surgical extraction of sperm followed by in vitro fertilization (IVF). Microsurgical reconstruction proves to be the most cost-effective option for treating obstructive azoospermia when compared with assisted reproductive techniques (6, 7). However, success rates of reconstruction defined by patency are as high as 99% for vasovasostomy (VV) but decline to around 65% if vasoepididymostomy (VE) is required (8, 9). Thus, continued refinement in technique is necessary in order to attempt to improve patency for patients undergoing VE. In this video, we show a comprehensive demonstration of microsurgical VE, highlighting the innovative epididymal occlusion stitch. The goal of this innovative surgical technique is to improve outcomes for VE. MATERIALS AND METHODS: The patient is a 39-year-old male diagnosed with obstructive azoospermia who presents for surgical reconstruction via VE. His partner is a 37-years-old female with regular menstrual cycles. The comprehensive clinical data encompasses a range of factors, including FSH levels, results from semen analysis, and outcomes from testicular sperm aspiration. This thorough exploration aims to provide a thorough understanding of our innovative surgical technique and its application in addressing complex cases of obstructive azoospermia. RESULTS: The procedure was started on the right, the vas deferens was identified and transected. The abdominal side of the vas was intubated and a vasogram performed, there was no obstruction. There was no fluid visible from the testicular side of the vas for analysis, thus we proceeded with VE. Upon inspection of the epididymis dilated tubules were identified. After selecting a tubule for VE, two 10-0 nylon sutures were placed, and it was incised. Upon inspection of the fluid motile sperm was identified. After VE, we performed a novel epididymal occlusion stitch technique. This was completed distal to the anastomosis by placing a 7-0 prolene through the tunica of the epididymis from the medial to lateral side. This stitch was then tightened down with the goal to largely occlude the epididymis so that sperm will preferentially travel through the anastomosis. The steps were then repeated on the left. At 3-month follow up, the patient had no change in testicular size as compared with preoperative size (18cc), he had no testicular or incisional discomfort, and on semen analysis he had presence of motile sperm. After 3 months post-surgery, the patient had motile sperm seen on semen analysis. DISCUSSION: The introduction of a novel epididymal occlusion stitch demonstrates a targeted strategy to enhance the success of microscopic VE. Encouragingly, a 3-month post-surgery follow-up reveals the presence of motile sperm, reinforcing the potential efficacy of our approach. This is promising given the historical lower patency, delayed time to patency, and higher delayed failure rates that patients who require VE experience (10). In total, 40% of all azoospermia cases can be attributed to obstruction. The conventional treatments for obstructive azoospermia involve microsurgical reconstruction and surgical sperm retrieval followed by IVF. While microsurgical reconstruction has proven to be economically viable, the quest for enhanced success rates has led to the exploration of innovative techniques. Historically, the evolution of VV and VE procedures, initially performed in the early 20th century, laid the foundation for contemporary microsurgical approaches (11). Notably, the microscopic VV demonstrated significant improvements in patency rates and natural pregnancy likelihood, as evidenced by the seminal Vasovastomy Study Group study in 1991 (8). In contemporary literature, success rates particularly for VE remain unchanged for the past three decades since the original published success rates by the Vasectomy Reversal Study Group (12). VE is associated with a longer time to patency as well with patients taking 2.8 to 6.6 months to have sperm return to ejaculate as compared to 1.7 to 4.3 months for those undergoing VV. Additionally, of those patients who successfully have sperm return to the ejaculate after VE up to 50% will have delayed failure compared to 12% for those undergoing VV who are patent. Finally, of those who experience delayed failure after undergoing VE it usually occurs earlier with studies reporting as early as 6 months post-operatively (10). Given the lack of improvement and significantly worsened outcomes with VE further surgical refinement is a constant goal for surgeons performing this procedure. CONCLUSION: In conclusion, this video is both a demonstration and a call to action for commitment to surgical innovation. We aim to raise the bar in VE success rates, ultimately bringing tangible benefits to patients and contributing to the ongoing evolution of reproductive medicine. The novel epididymal occlusion stitch emerges as a beacon of progress, promising not only enhanced safety but also potential reductions in patency time. Surgical excellence and methodological refinement, as exemplified in this video, lay the foundation for a future where male reproductive surgery continues to break new ground.
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Azoospermia , Epididimo , Ducto Deferente , Vasovasostomia , Masculino , Azoospermia/cirurgia , Epididimo/cirurgia , Humanos , Ducto Deferente/cirurgia , Ducto Deferente/anormalidades , Vasovasostomia/métodos , Resultado do Tratamento , Microcirurgia/métodos , Técnicas de Sutura , Reprodutibilidade dos TestesRESUMO
Erectile dysfunction is a common sexual dysfunction that affects a significant proportion of men. Low-intensity extracorporeal shockwave therapy has been evaluated in multiple clinical trials as a therapeutic option for men with erectile dysfunction. The robustness of these clinical trials is not well defined, as the trials are hindered by inconsistent treatment protocols, small study arm size and short follow-up intervals. The fragility index is a statistical analysis which is used to evaluate the robustness of clinical trials. It is calculated by evaluating the minimum number of patients in a given trial arm that would be required to have an alternative outcome to alter the statistical significance of the results. The lowest fragility index in statistically significant trials is 1, meaning that if just one participant experienced an alternate outcome, the results would no longer achieve statistical significance. The upper limit is determined by the number of participants in a given arm of the trial. Herein, a scoping review of clinical trials evaluating the efficacy of low-intensity extracorporeal shockwave therapy in erectile dysfunction to determine the fragility index of trials with clinically significant results. We hypothesized that the fragility index would be low, indicating the results are less robust and generalizable.
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OBJECTIVE: To evaluate if telehealth consultations would impact the likelihood of patients following through with vasectomies. METHODS: We utilized electronic medical records from the past 5 years to retrospectively evaluate male patients undergoing a sterilization consult. Telehealth consultations have been offered since March 2020 due to the COVID-19 pandemic. Patients were stratified to in-office or telehealth consultation. We then utilized billing codes to determine if patients underwent a vasectomy. Percentages of patients who subsequently underwent vasectomy were compared using Chi-square analysis. Logistic regression was performed to identify factors associated with completing vasectomy. RESULTS: There were a total of 369 patients who underwent a telehealth male sterilization consultation and 1664 patients who were seen in the office. We found that 66.9% of telehealth patients ultimately underwent a vasectomy (n.ß=.ß247) compared to 64.3% of patients who were seen via office assessment (n.ß=.ß1070) (X2 =.ß0.646, p.ß=.ß.724). Younger age was the only variable on univariate logistic regression that was associated with completing vasectomy (p.ß=.ß.002) via either an in-person or televisit, while body mass index, race, and ethnicity were not significant. CONCLUSION: Only 2/3 of the men completing a vasectomy consult receive a subsequent vasectomy. Both in-office and telehealth consultations resulted in comparable rates of vasectomy. This is the first study to report on the likelihood of following through with a surgical procedure comparing in-office vs.ßtelehealth assessment in male sexual and reproductive medicine. As vasectomy consultations continue to rise, clinicians can be reassured by the effectiveness of telehealth consultations prior to vasectomy.
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COVID-19 , Telemedicina , Vasectomia , Humanos , Masculino , Vasectomia/métodos , Esterilização Reprodutiva , Estudos Retrospectivos , PandemiasRESUMO
INTRODUCTION: Competency by Design (CBD) is a form of competency-based medical education implemented in Canadian urology programs since 2018. Regular, multimethod assessments and formative feedback via Entrustable Professional Activities (EPAs) are the cornerstones of CBD. Personalized and regular feedback are the top perceived benefits of CBD by both residents and supervisors; however, evidence shows that in practice, constant feedback-seeking is burdensome, and increased quantity of feedback does not equal increased quality. The experience of CBD implementation has not yet been studied in surgical programs. Our aim was to examine how supervisors and residents have experienced the integration of formative assessment and feedback since the implementation of CBD in a surgical training program. METHODS: Using data from focus groups, a qualitative phenomenological analysis based on the experiences of the residents and supervisors in a urology residency program was performed. RESULTS: Residents and supervisors felt that CBD allowed for better tracking of resident performance and increased quantity of feedback; however, increased workload, delayed completion of EPA assessments, lack of direct observation in non-surgical activities, variable supervisor guidance, and lack of understanding of CBD were cited as barriers to providing proper feedback and formative assessment. CONCLUSIONS: The participants experienced a lukewarm transition in feedback and formative assessment practices with CBD. As with every process of change, these growing pains may eventually result in meaningful practice improvements and incorporation of a CBD culture into everyday learning activities.
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INTRODUCTION: The anteroposterior diameter (APD) of the renal pelvis is a commonly used ultrasound parameter in the evaluation and management of hydronephrosis. It has been established that an APD value associated with pyeloplasty is around 25 mm. Some believe the APD should be measured at the innermost part of the renal pelvis while others suggest that it should be done at the renal contour. However, there is no consensus on the optimal APD measurement technique including whether it should be measured supine or prone. This study compared six different techniques of APD measurements, in both supine and prone positions, and further evaluated their association with pyeloplasty. METHODS: Data was obtained by retrospectively reviewing patients' charts that had initial high-grade hydronephrosis (HGH) from 2008 to 2014. We recorded the patients' demographics, ultrasound data and management choice. In the mid-renal transverse plane, the APD was measured by 2 blinded investigators, at the intra-renal, renal contour and extra-renal regions of the renal pelvis in supine and prone positions (Figure A). We compared the six APD measurements based on the outcome of management (pyeloplasty vs. conservative management). The ROC curve obtained was then used to assess the ability of various APD measurements in predicting surgical intervention. The cutoff value chosen that predicts pyeloplasty was the lowest diameter with 100% specificity. RESULTS: We included 129 patients (134 renal units). Forty-four renal units (42 patients) underwent pyeloplasty whereas 90 renal units (87 patients) were managed conservatively. Patients' demographics were grouped by both SFU grade and clinical outcome. Regardless of grade, the APD measurements were different in all 6 techniques. All APD measurement techniques showed good inter-rater reliability. Based on the ROC curve, all APD measurements were associated with pyeloplasty with an AUC from 0.89 to 0.91. The supine extra-renal APD measurement of 24 mm was the most sensitive cutoff value. The cutoff values ranged from 18 to 27 mm when including patients from all grades of hydronephrosis. The median APD measurements were significantly less for SFU grade 3 than grade 4 hydronephrosis in all positions (P < 0.001 for all measurements), yet the predictive cutoff value of 24 mm for the supine extra-renal was similar for both grades. CONCLUSION: APD measurements differ based on the technique, but they are all equally associated with the clinical outcome of pyeloplasty. The inter-rater reliability of all techniques were excellent. Though the median APD measurements are smaller in SFU grade 3, it appears that the cutoff for a predictive renal pelvic APD does not differ between SFU grades 3 and 4 for the supine extra-renal technique. We conclude that the technique for measuring the APD needs to be specified in studies of hydronephrosis and in any grading systems.
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Hidronefrose , Obstrução Ureteral , Humanos , Lactente , Estudos Retrospectivos , Reprodutibilidade dos Testes , Obstrução Ureteral/cirurgia , Pelve Renal/diagnóstico por imagem , Pelve Renal/cirurgia , Hidronefrose/diagnóstico por imagem , Hidronefrose/cirurgia , Hidronefrose/complicaçõesRESUMO
BACKGROUND: Cellphones emit radiofrequency electromagnetic radiation (RF-EMR) for transmission of data for social media communication, web browsing, and music/podcast streaming. Use of Bluetooth ear buds has probably prolonged the time during which cellphones reside in the trouser pockets of men. It has been postulated that RF-EMR increases oxidative stress and induces free radical formation. OBJECTIVE: To investigate the effect of wireless-spectrum (4G, 5G, and WiFi) RF-EMR emitted by modern smartphones on sperm motility and viability and explore whether these effects can be mitigated using a physical barrier or distance. DESIGN, SETTING, AND PARTICIPANTS: Semen samples were obtained from fertile normozoospermic men aged 25-35 yr. A current-generation smartphone in talk mode was used as the RF-EMR source. A WhatsApp voice call was made using either 4G, 5G, or WiFi wireless connectivity. We determined if exposure effects were mitigated by either a cellphone case or greater distance from the semen sample. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: The semen samples were analyzed according to 2010 World Health Organization laboratory guidelines. Statistical analysis was performed using SPSS v.28. RESULTS AND LIMITATIONS: We observed decreases in sperm motility and viability with WiFi exposure but not with exposure to 4G or 5G RF-EMR. With large variability among smartphones, continued research on exposure effects is needed. CONCLUSIONS: Our exploratory study revealed that sperm motility and viability are negatively impacted by smartphones that use the WiFi spectrum for data transmission. PATIENT SUMMARY: We looked at the effect of cellphone use on sperm motility and viability. We found that cellphones using WiFi connectivity for data usage have harmful effects on semen quality in men.
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Telefone Celular , Motilidade dos Espermatozoides , Masculino , Humanos , Análise do Sêmen , Radiação Eletromagnética , Ondas de Rádio/efeitos adversosRESUMO
The 2022 global monkeypox (MPX) outbreak is the largest in history to occur outside of endemic African regions. Disease spread during this outbreak has been primarily through human-to-human transmission, with sexual contact being of particular concern. Clinical presentations have commonly featured genital, perianal, and oral lesions associated with sexual activity among men who have sex with men (MSM), who compose the vast majority of MPX cases. This review discusses the epidemiology, clinical features, and evaluation of MPX with regards to men's sexual health. Comparisons were made between MPX and its relative from the Orthopoxvirus genus, smallpox, in order to make informed inferences on the potential effects of MPX on men's sexual health. This review also discusses the role of men's health specialists and urologists in addressing the current outbreak.
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OBJECTIVE: To examine the relationship between abnormal routine semen parameters and DNA damage associated with advanced paternal age and infertility by controlling for common biases contested in the current literature. MATERIALS & METHODS: Prospective study using 151 semen samples collected from men aged 18-80 at 2 visits with 1-3 months intervals. Samples were collected from both infertile and general population controls. Conventional semen parameters were measured including volume, concentration and motility. Sperm DNA damage was measured using the %DNA Fragmentation Index (%DFI) and High DNA stainability (%HDS) using Sperm Chromatin Structure Assay (SCSA). Patients were then classified according to %DFI as normal (<18), intermediate (18-27), or high (>27). RESULTS: Significant correlation between all sperm parameters was seen between both visits regardless of age. DFI had the highest correlation between both visits (R2 = 0.77). Progressive motility, total motility and %DFI were significantly affected in men ≥50 years old when compared to men <35 and men 35-49 years old (P <.001). Forty-eight percent of men with intermediate %DFI changed category on their second visit, whereas men with high and low %DFI changed category in 15% and 9%, respectively. CONCLUSION: Sperm and SCSA parameters do not change significantly between 2 visits at 1-3 months intervals in the total population and after subgrouping. Men of advanced age have poorer sperm parameters and more DNA damage. Men with initially normal or elevated %DFI are unlikely to change DNA damage category. Older men are more likely to have sperm parameters and DNA damage vary on repeat semen analysis compared to younger men.
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Infertilidade Masculina , Sêmen , Humanos , Masculino , Idoso , Pessoa de Meia-Idade , Adulto , Estudos Prospectivos , Fragmentação do DNA , Cromatina , Espermatozoides , Infertilidade Masculina/diagnóstico , Infertilidade Masculina/genética , Dano ao DNA , Fertilidade , Motilidade dos EspermatozoidesRESUMO
The inability to conceive due to male infertility is a complex issue with a wide variety of etiologies. Sperm DNA damage can be both a barrier to natural pregnancy and successful assisted reproductive technology (ART). The aim of this narrative review was to describe and highlight the effects of sperm DNA fragmentation and the most recent data on various treatment strategies to decrease sperm DNA damage. Finally, we proposed a management algorithm for couples undergoing ART with increased sperm DNA fragmentation.
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Infertilidade Masculina , Sêmen , Humanos , Gravidez , Feminino , Masculino , Fragmentação do DNA , Espermatozoides , Infertilidade Masculina/genética , Infertilidade Masculina/terapia , FertilidadeRESUMO
Secondary erythrocytosis is one of the most common adverse events associated with testosterone therapy (TT). Upon encountering this, clinicians will often either adjust TT dosing, stop therapy, order a phlebotomy, or recommend a combination of these. Despite this, the evidence for secondary polycythemia causing harm during TT is scarce, and the hematocrit-based cutoffs present in multiple guidelines appear to be arbritrarily chosen. In this review, we present the pathophysiology behind TT and secondary erythrocytosis, the evidence connecting TT, secondary erythrocytosis and major adverse cardiovascular events (MACE), and the data supporting varying interventions upon diagnosis of secondary erythrocytosis.
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Policitemia , Humanos , Policitemia/induzido quimicamente , Policitemia/complicações , Testosterona/efeitos adversos , Hematócrito , Flebotomia/efeitos adversosRESUMO
INTRODUCTION AND OBJECTIVE: The value of diuretic renography drainage times in congenital hydronephrosis (AHN) decision making is controversial. Recently, a group suggested a modification to the classically described diuretic drainage time cut-off values. They found that a drainage half-time (T1/2) < 5 min was normal whereas a T1/2 exceeding 75 min predicted pyeloplasty. In addition, they reported on the benefit of a delayed drainage image obtained with gravity assistance. We sought to evaluate the ability of these modified T1/2 criteria to predict pyeloplasty, alone or in combination with a delayed drainage image referred to as Global Washout (GWO). METHODS: We retrospectively reviewed 113 patients, including consecutive pyeloplasties for AHN from 2004 to 2018. Patients who underwent pyeloplasty due to low differential renal function (DRF) < 30% or infection were excluded. The control group comprised high grade AHN managed non-operatively. The initial renal ultrasound and MAG 3 Lasix renogram were reviewed for grade, differential renal function (DRF), T1/2 and GWO. A ROC curve was used to evaluate the T1/2 and GWO cut-off points that can predict pyeloplasty, using a p-value of less than 0.05. RESULTS: The pyeloplasty group consisted of 62 patients and the control group consisted of 51 patients. Two patients (3%) in the pyeloplasty group had a T1/2 < 5 min whereas 21 (34%) had T 1/2 > 75 min (p < 0.001). In the control group, 25 patients (49%) had T 1/2 < 5 min and none had T1/2 >75 min (P < 0.001). The ROC curve for T1/2 < 5 min demonstrated 94% sensitivity and 51% specificity whereas a T1/2 >75 min demonstrated 100% specificity and 34% sensitivity. Analysis of the GWO using a ROC curve revealed that a cut-off of 50% GWO has 100% specificity and 52% sensitivity for pyeloplasty. Overall, a T1/2 > 75 min or GWO <50% predicted 53% of pyeloplasties (Fig A) and was absent in all conservatively managed cases. DISCUSSION: The limitations of the present study include its retrospective nature. Secondly, the lack of a gold standard diagnostic test for uretero-pelvic junction obstruction hampers objective quantification of diagnostic test utility performance. CONCLUSIONS: We confirm the utility of the modified diuretic half-time criteria and delayed gravity assisted imaging. A T1/2 > 75 min or GWO <50% are indicators of severity whereas a T1/2 of <5 min or GWO >90% is reassuring. Gravity assisted delayed imaging can be especially helpful in cases with indeterminate T 1/2 times and should be included in the standard assessment of hydronephrotic kidneys. These parameters can be used to tailor the frequency and invasiveness of imaging within observation protocols.
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Hidronefrose , Obstrução Ureteral , Diuréticos , Drenagem , Humanos , Hidronefrose/diagnóstico por imagem , Hidronefrose/cirurgia , Lactente , Pelve Renal , Renografia por Radioisótopo , Estudos Retrospectivos , Obstrução Ureteral/diagnóstico por imagem , Obstrução Ureteral/cirurgiaRESUMO
Complete penile glans amputation is exceedingly rare in children with little known about the outcomes of management. We present a case of a 12-day-old male who underwent ritual circumcision complicated by total amputation of the glans, which was treated with reimplantation of the glans. Our technique was successfully carried out following reconstruction of anatomical planes with loop magnification and fine 7-0 sutures. We review the sparse literature in children and compare it to the techniques reported more commonly in adults.
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A 66-year-old male, with an undiagnosed duplex system, underwent a Robotic-assisted Radical Prostatectomy that was complicated by an ectopic ureter injury. Given the incidence of less than 0.001%, management of ectopic ureters for patients undergoing a RARP is foreign to most urologists. The delayed presentation lead us to opt for selective angioembolisation of the hydronephrotic segment. Symptoms completely resolved and a follow up scan showed resolution of the hydronephrosis as well as hypovascularized parenchyma of the upper moiety. A literature review was done along with this example of non-surgical management of a rare RARP complication.
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Prostatectomia/métodos , Procedimentos Cirúrgicos Robóticos , Ureter/anormalidades , Ureter/lesões , Idoso , Humanos , Masculino , Período Pós-Operatório , Ferimentos e Lesões/cirurgiaRESUMO
Vitamin B12 (cobalamin, Cbl) cofactors adenosylcobalamin (AdoCbl) and methylcobalamin (MeCbl) are required for the activity of the enzymes methylmalonyl-CoA mutase (MCM) and methionine synthase (MS). Inborn errors of Cbl metabolism are rare Mendelian disorders associated with hematological and neurological manifestations, and elevations of methylmalonic acid and/or homocysteine in the blood and urine. We describe a patient whose fibroblasts had decreased functional activity of MCM and MS and decreased synthesis of AdoCbl and MeCbl (3.4% and 1.0% of cellular Cbl, respectively). The defect in cultured patient fibroblasts complemented those from all known complementation groups. Patient cells accumulated transcobalamin-bound-Cbl, a complex which usually dissociates in the lysosome to release free Cbl. Whole-exome sequencing identified putative disease-causing variants c.851T>G (p.L284*) and c.1019C>T (p.T340I) in transcription factor ZNF143. Proximity biotinylation analysis confirmed the interaction between ZNF143 and HCFC1, a protein that regulates expression of the Cbl trafficking enzyme MMACHC. qRT-PCR analysis revealed low MMACHC expression levels both in patient fibroblasts, and in control fibroblasts incubated with ZNF143 siRNA.