Oxidative Mechanism of Peyronie's Disease and Effectiveness of Pentoxifylline in the Therapeutic Management: A Narrative Review

Peyronie's disease (PD) is a chronic disease characterized by the development of fibrous tissue in the tunica albuginea of the penile corpora cavernosa that causes penile deformity. The precise cause of PD is not completely understood, but it is generally believed to be initiated by a specific injury in the affected area. Research has consistently shown that oxidative stress (OS) is a key player in PD. Pentoxifylline (PTX) is a synthetic derivative of methylxanthine that was initially used for the management of peripheral vascular disease. PTX has also been used in humans for several inflammatory and fibrotic conditions, including PD. PTX has several mechanisms of action, including antioxidant, antifibrotic, anti-inflammatory, and vasorelaxant. This article aims to verify, after a review of the literature regarding the use of PTX in PD, whether this substance is really able to cure PD. We conducted research by consulting the scientific literature on the topic. Results: After examining 39 articles, we considered 20 articles eligible for our narrative review, including a single randomized controlled clinical study, six clinical studies with a control group, a single uncontrolled clinical study, eight case report studies, and four systematic review articles. Conclusions: Although the systematic review articles selected in this paper showed no consistent evidence regarding the efficacy of PTX, in our opinion, the clinical studies we have analyzed undoubtedly demonstrate that PTX is able to combat PD, thanks to its ability to interfere with the pathogenic mechanisms of the disease. However, we believe that further new randomized controlled trials are necessary to more clearly demonstrate the effectiveness of PTX in the treatment of PD.

Investigation of association between clinically significant prostate cancer, obesity and platelet to-lymphocyte ratio and neutrophil -to-lymphocyte ratio

INTRODUCTION

Several blood markers of inflammation are elevated in prostate cancer (PCa) and have prognostic value. Little is known about the relationship between these markers, PCa, and other factors associated with chronic inflammation, such as smoking and obesity. We analyzed the interaction between neutrophil and platelet counts indexed to lymphocyte count (NLR and PLR, resp.) and clinically significant PCa (csPCa), accounting for the potential confounding factors of systemic inflammation.

METHODS

NLR and PLR were evaluated in a multicenter prospective study in 443 patients. CsPCa was defined as a Gleason ≥ 4 + 3. Differences between patients with csPCa and non-csPCA were evaluated using the chi-square test, analysis of variance or the Kruskal-Wallis test. Multivariable logistic regression analysis adjusted for smoking, hypertension, diabetes, and cardiovascular disease, and in separate models, either body mass index or waist-to-hip ratio was used to characterize the relationship between inflammation and csPCa.

RESULTS

None of the factors such as plateletcrit, NLR, and PLR were significantly different between patients with csPCa or non-significant PCa. After adjustment, there was no association between PLR, NLR, plateletcrit or platelet count and csPCa. In an exploratory analysis, there was no association between markers of inflammation and PSA levels > 10 ng/mL. When testing different NLR cutoffs to predict csPCa in ROC analysis, none reached a clinically meaningful value.

CONCLUSION

In contrast to previous studies, we found no significant association between easily available blood markers of inflammation and indices of PCa aggressiveness. Further research is required to determine whether inflammation promotes PCa. (ClinicalTrials.gov: NCT03127631. Date of registration: April 25, 2017.

Residual Kidney Function in Hemodialysis: Its Importance and Contribution to Improved Patient Outcomes

Individuals afflicted with advanced kidney dysfunction who require dialysis for medical management exhibit different degrees of native kidney function, called residual kidney function (RKF), ranging from nil to appreciable levels. The primary focus of this manuscript is to delve into the concept of RKF, a pivotal yet under-represented topic in nephrology. To begin, we unpack the definition and intrinsic nature of RKF. We then juxtapose the efficiency of RKF against that of hemodialysis in preserving homeostatic equilibrium and facilitating physiological functions. Given the complex interplay of RKF and overall patient health, we shed light on the extent of its influence on patient outcomes, particularly in those living with advanced kidney dysfunction and on dialysis. This manuscript subsequently presents methodologies and measures to assess RKF, concluding with the potential benefits of targeted interventions aimed at preserving RKF.

Efficacy and safety of malleable penile prosthesis compared to inflatable penile prosthesis in erectile dysfunction patients

INTRODUCTION

Erectile dysfunction can cause self-withdrawal and decreased quality of life. Patients who do not respond to pharmacological therapy and other conservative treatments are urged to undergo penile prosthesis implantation. Malleable penile prosthesis was the first prosthesis developed, but then inflatable penile prosthesis was developed to give a more natural erection. There is no meta-analysis comparing inflatable and malleable penile prostheses in terms of safety and efficacy. This study is conducted to evaluate patient and partner satisfaction, ease of use, mechanical failure, and infection rate in patients who underwent penile prosthesis implantation.

METHOD

This meta-analysis followed Preferred Reporting Items for Systematic Review and Meta-analysis (PRISMA) protocols. Five eligible studies were included from Pubmed, Scopus, ScienceDirect, and SemanticScholar databases.

RESULT

In this study, patient and partner satisfaction are significantly better (OR 3.39, 95% CI 1.66-6.93, p = 0.0008) (OR 2.32, 95% CI 1.75-3.08, p < 0.00001). Mechanical failure is also significantly higher in inflatable penile prostheses (OR 5.60, 95% CI 2.02-15.53, p = 0.0009). There is no significant difference in terms of ease of use and infection rate in inflatable or malleable penile prostheses.

CONCLUSIONS

This study concluded that inflatable penile prosthesis is better in terms of patient and partner satisfaction, but mechanical failures occur more frequently in this type of prosthesis.

Optimising postoperative care: Same-day discharge after transurethral resection of the prostate

INTRODUCTION

This study aims to assess the feasibility and safety of same-day discharge after transurethral resection of the prostate.

MATERIALS AND METHODS

Five years of records were retrospectively analysed. Length of stay categorised patients into Groups 1 (same-day discharge) and 2 (standard-length discharge). Logistic regression analysis was performed, controlling for clinicodemographic factors. Student's t-test compared continuous bladder irrigation and catheter dwell times.

RESULTS

A total of 459 patients were identified between 2016 and 2021, 280 in Group 1 and 179 in Group 2, with median ages of 71.0 (interquartile range 36-92) and 72.0 (interquartile range 47-101) years (p = 0.067), respectively. Same-day discharge rates notably increased post-2018 (p = 0.025). Median prostate tissue resected in Group 2 was 7.1g (3.4-12.4g) and in Group 1 was 4.9g (2.4-10.2g; p = 0.034). While continuous bladder irrigation >1 hour was significantly lower in Group 1 than Group 2 (96.8% versus 27.4%; p = 0.0001), catheter dwell times were comparable (70.1 and 70.8 hours, respectively). Control-adjusted results showed a 40% reduction in emergency department representation odds for Group 1 compared with Group 2 (odds ratio = 0.60; 95% confidence interval = 0.37-0.99; p = 0.04). Length of stay was not significantly associated with hospital readmissions (p = 0.11). Continuous bladder irrigation for <1 hour in Group 1 was associated with a reduced emergency department representation (odds ratio = 0.43; 95% confidence interval = 0.197-0.980) but not readmission (odds ratio = 0.413; 95% confidence interval = 0.166-1.104).

CONCLUSIONS

Same-day discharge post-transurethral resection of the prostate may be a viable and safe option for carefully selected patients.

DNA Adducts in Cancer Chemotherapy

DNA adducting drugs, including alkylating agents and platinum-containing drugs, are prominent in cancer chemotherapy. Their mechanisms of action involve direct interaction with DNA, resulting in the formation of DNA addition products known as DNA adducts. While these adducts are well-accepted to induce cancer cell death, understanding of their specific chemotypes and their role in drug therapy response remain limited. This perspective aims to address this gap by investigating the metabolic activation and chemical characterization of DNA adducts formed by the U.S. FDA-approved drugs. Moreover, clinical studies on DNA adducts as potential biomarkers for predicting patient responses to drug efficacy are examined. The overarching goal is to engage the interest of medicinal chemists and stimulate further research into the use of DNA adducts as biomarkers for guiding personalized cancer treatment.

Early investigational agents for the treatment of benign prostatic hyperplasia'

INTRODUCTION

Benign prostatic hyperplasia (BPH), as a clinical entity that affects many people, has always been in the forefront of interest among researchers, pharmaceutical companies, and physicians. Patients with BPH exhibit a diverse range of symptoms, while current treatment options can occasionally cause adverse events. All the aforementioned have led to an increased demand for more effective treatment options.

AREAS COVERED

This review summarizes the outcomes of new medications used in a pre-clinical and clinical setting for the management of male lower urinary tract symptoms (LUTS)/BPH and provides information about ongoing trials and future directions in the management of this condition. More specifically, sheds light upon drug categories, such as reductase‑adrenoceptor antagonists, drugs interfering with the nitric oxide (NO)/cyclic guanosine monophosphate (GMP) signaling pathway, onabotulinumtoxinA, vitamin D3 (calcitriol) analogues, selective cannabinoid (CB) receptor agonists, talaporfin sodium, inhibitor of transforming growth factor beta 1 (TGF-β1), drugs targeting the hormonal control of the prostate, phytotherapy, and many more.

EXPERT OPINION

Clinical trials are being conducted on a number of new medications that may emerge as effective therapeutic alternatives in the coming years.

Robotic transperitoneal versus retroperitoneal approach for anterior renal mass nephron-sparing surgery

Robotic nephron-sparing surgery is traditionally performed via a transperitoneal (TP) approach. However, the retroperitoneal (RP) approach has gained popularity, particularly for posterolateral renal masses. The RP approach is associated with shorter operative time, less blood loss, and shorter length of stay, while preserving oncologic outcomes in selected masses. Here, we aim to assess the feasibility of the RP approach in excising anterior renal masses. Patients ≥ 18 years of age who underwent robotic nephron-sparing surgery for anterior renal masses were retrospectively identified (2008-2022). Baseline demographics, tumor characteristics, and perioperative data were collected and characterized based on TP vs RP approaches. Wilcoxon rank sum test and Pearson's Chi-squared test were used to compare continuous and categorical variables, respectively. Two hundred and sixteen patients were included-178 (82.4%) underwent TP approach and 38 (17.6%) underwent RP approach. Baseline demographics, preoperative tumor size, and renal nephrometry scores were similar. The RP approach was associated with shorter operative (150 vs 203 min, p < 0.001) and warm ischemia time (12 vs 21 min, p < 0.001), and less blood loss (20 vs 100 cc, p = 0.002) (Table 1). The RP approach was associated with shorter length of stay (1 vs 2 days, p < 0.001) and less total complications (5.3% vs 19.1%, p = 0.038). Major complication (Clavien-Dindo Grade > 3) rates were similar. There was no difference in positive surgical margin rates or pathologic characteristics. Robotic RP approach for nephron-sparing surgery is feasible for eligible anterior tumors and is associated with favorable perioperative outcomes with preserved negative surgical margin rates. Table 1 Patient baseline demographics Overall Transperitoneal Retroperitoneal p value Median/N IQR/% Median/N IQR/% Median/N IQR/% N 216 178 82.4% 38 17.6% Age (years) 60.5 (52.1-67.7) 60.4 (52.8-67.7) 61.6 (49.1-69.2) 0.393 Sex Male 126 58.3% 100 56.2% 26 68.4% Female 90 41.7% 78 43.8% 12 31.6% 0.165 Race White 162 75.0% 137 77.0% 25 65.8% Asian 4 1.9% 2 1.1% 2 5.3% Black 21 9.7% 18 10.1% 3 7.9% Hispanic 26 12.0% 18 10.1% 8 21.1% Other 2 0.9% 2 1.1% 0 0.0% 0.197 Body mass index (kg/m2)  < 25 32 14.8% 25 14.0% 7 18.4% 25-30 68 31.5% 55 30.9% 13 34.2% 30-35 60 27.8% 50 28.1% 10 26.3% 35 +  56 25.9% 48 27.0% 8 21.1% 0.808 Prior abdominal surgery Yes 118 54.6% 104 58.4% 14 36.8% No 98 45.4% 74 41.6% 24 63.2% 0.015 Prior kidney surgery Yes 10 4.6% 9 5.1% 1 2.6% No 206 95.4% 169 94.9% 37 97.4% 0.518 Chronic kidney disease stage ≥ 3 Yes 45 20.8% 38 21.3% 7 18.4% No 171 79.2% 140 78.7% 31 81.6% 0.687 Charlson comorbidity index 0 138 63.9% 116 65.2% 22 57.9% 1 46 21.3% 38 21.4% 8 21.1% 2 19 8.8% 13 7.3% 6 15.8%  ≥ 3 13 6.0% 11 6.2% 2 5.3% 0.412 Tumor size (cm) 2.7 (2-3.6) 2.8 (2-3.5) 2.55 (2-3.7) 0.796 Tumor laterality Left 100 46.3% 78 43.8% 22 57.9% Right 116 53.7% 100 56.2% 16 42.1% 0.114 Clinical T stage cT1a 186 86.1% 152 85.4% 34 89.5% cT1b 30 13.9% 26 14.6% 4 10.5% 0.509 RENAL Nephrometry score Low (4 to 6) 94 43.5% 76 42.7% 18 47.4% Intermediate (7 to 9) 112 51.9% 94 52.8% 18 47.4% High (≥ 10) 19 4.6% 8 4.5% 2 5.3% 0.829 TE tumor enucleation, SPN standard margin partial nephrectomy, IQR interquartile range.

Muscle Strength and Male Sexual Function

Sexual dysfunction, in particular erectile dysfunction, is a common complaint among aging men. Obesity, diabetes, hypertension, and smoking are shown to be independent risk factors for erectile dysfunction, while cardiorespiratory fitness is shown to be protective. Less is known about the role of muscle strength in male sexual function. Our objective was to study the association between male sexual function and typical cardiovascular risk factors, together with exercise and muscle strength. We included data from the fourth wave of the RHINE study. Data on anthropometrics, exercise habits, diseases, muscle strength, and sexual function were collected using questionnaires, including the Aging Males' Symptoms (AMS) scale. We used multivariable logistic regression analysis to measure the association between sexual function and body mass index (BMI), age, smoking, diabetes, hypertension, exercise and muscle strength status. We included 2116 men aged 48-75 from four Nordic-Baltic countries. BMI, age, smoking, diabetes, and hypertension were found to be associated with higher odds of reporting decreased sexual function, while reporting intact muscle strength was associated with lower odds. In a large Nordic-Baltic male study population, we show that known cardiovascular risk factors are associated with decreased sexual function, while reporting intact muscle strength is associated with lower odds of reporting decreased sexual function.

Heart Failure and Erectile Dysfunction: a Review of the Current Evidence and Clinical Implications

PURPOSE OF REVIEW

Heart failure (HF) and erectile dysfunction (ED) are two common conditions that affect millions of men worldwide and impair their quality of life. ED is a frequent complication of HF, as well as a possible predictor of cardiovascular events and mortality. ED deserves more attention from clinicians and researchers.

RECENT FINDINGS

The pathophysiology of ED in HF involves multiple factors, such as endothelial dysfunction, reduced cardiac output, neurohormonal activation, autonomic imbalance, oxidative stress, inflammation, and drug side effects. The diagnosis of ED in HF patients should be based on validated questionnaires or objective tests, as part of the routine cardiovascular risk assessment. The therapeutic management of ED in HF patients should be individualized and multidisciplinary, considering the patient's preferences, expectations, comorbidities, and potential drug interactions. The first-line pharmacological treatment for ED in HF patients with mild to moderate symptoms (NYHA class I-II) is phosphodiesterase type 5 inhibitors (PDE5Is), which improve both sexual function and cardiopulmonary parameters. PDE5Is are contraindicated in patients who use nitrates or nitric oxide donors for angina relief, and these patients should be advised to avoid sexual activity or to use alternative treatments for ED. Non-pharmacological treatments for ED, such as psychotherapy or couples therapy, should also be considered if there are significant psychosocial factors affecting the patient's sexual function or relationship. This review aims to summarize the most recent evidence regarding the prevalence of ED, the pathophysiology of this condition with an exhaustive analysis of factors involved in ED development in HF patients, a thorough discussion on diagnosis and management of ED in HF patients, providing practical recommendations for clinicians.

Analysis of flow rate of continuous bladder irrigation according to the height of the irrigation infusion set

This is a control volume analysis to examine the flow rate of irrigation fluid according to the size of indwelling catheter and the height of the fluid bag in consideration of the temperature of irrigation fluid and intra-bladder pressure during continuous bladder irrigation. In case of minimum bladder pressure with room temperature, the flow rates were - 0.045 to 0.993 cc/sec for 18Fr, - 0.053 to 1.176 cc/sec for 20Fr, - 0.055 to 1.227 cc/sec for 22Fr, and - 0.055 to 1.243 cc/sec for 24Fr. In case of maximum bladder pressure with room temperature, the flow rates were - 0.180 to 0.868 cc/sec for 18Fr, - 0.212 to 1.028 cc/sec for 20Fr, - 0.220 to 1.072 cc/sec for 22Fr, and - 0.223 to 1.086 cc/sec for 24Fr. In case of minimum bladder pressure with cold fluid, the flow rates were - 0.028 to 0.365 cc/sec for 18Fr, - 0.033 to 0.749 cc/sec for 20Fr, - 0.034 to 0.781 cc/sec for 22Fr, and - 0.035 to 0.791 cc/sec for 24Fr. In case of maximum bladder pressure with cold fluid, the flow rates were - 0.112 to 0.553 cc/sec for 18Fr, - 0.131 to 0.653 cc/sec for 20Fr, - 0.137 to 0.681 cc/sec for 22Fr, and - 0.139 to 0.689 cc/sec for 24Fr. This study is significant in that it utilized a fluid dynamics approach to provide basic data for continuous bladder wash care. Through the findings of this study, nurses can plan the exchange time of irrigation fluid and the pattern of urinary drainage when performing continuous bladder irrigation. It is also inferred that there may be an advantage in not having to calculate additional material costs for using an infusion pump for patients by determining the hourly injection rate of irrigation fluid based on the height of the infusion set's drop chamber.

Primary Retroperitoneal Carcinomas: New Insights into Pathogenesis and Clinical Management in Comparison with Ovarian Carcinomas and Carcinoma of Unknown Primary

Primary retroperitoneal carcinomas are very rare tumors. Their pathogenesis remains unknown but may be associated with that of ovarian carcinomas, considering the similarity in morphology and gender preference. Although metaplasia of coelomic epithelium is the most widely accepted theory, the pathogenesis of retroperitoneal carcinomas may differ by histologic subtype, like ovarian carcinomas. Mucinous carcinoma, which develops in both women and men, may originate in both primordial germ cells and Walthard cell nests that may be derived from the fallopian tube. Serous carcinomas may be associated with endosalpingiosis, the presence of fallopian tube-like epithelium outside the fallopian tube, and a remnant Müllerian tract. Endometrioid and clear cell carcinomas appear to be associated with extraovarian endometriosis. Additionally, both carcinomas in the retroperitoneal lymph nodes may be metastatic diseases from endometrial and/or renal cell cancer that regress spontaneously (carcinoma of unknown primary). Retroperitoneal carcinomas are difficult to diagnose, as they have no characteristic symptoms and signs. Surgery is the cornerstone of treatment, but the necessity of chemotherapy may depend on histological subtype. Further studies are necessary, in particular studies on endosalpingiosis, as endosalpingiosis is a poorly understood condition, although it is associated with the development of both serous and mucinous carcinomas.

Thoracic duct stent treatment for chyle leak after nephrectomy

Chyle leak is a rare and serious condition caused by damaged lymphatic vessels. It can occur after retroperitoneal surgery involving extensive lymphadenectomy for kidney cancer. Besides lymphatic channel damage, the obstruction of the thoracic duct worsens the leakage. Managing patients with thoracic duct obstruction and postsurgical chyle leakage is challenging due to limited data on how to handle this condition. In this case report, a 28-year-old female patient underwent left nephrectomy for left kidney cancer. Three days after the surgery, milky fluid drained from the left renal fossa. Conservative treatment failed, and further examination through magnetic resonance lymphangiography revealed the absence of the thoracic duct and contrast extravasation at the left renal fossa. Lymphangiography confirmed distal thoracic duct obstruction. The patient's condition was successfully managed by using thoracic duct stenting. This report contributes to the understanding that thoracic duct obstruction can lead to lymphatic collateral circulation within the abdomen, thereby increasing the risk of postoperative chylous leak.

Effects of vitamin C supplementation on oxidative stress and serum paraoxonase/arylesterase activities in patients on long-term hemodialysis

BACKGROUND

Oxidative stress increases oxidizability of apolipoprotein-B containing lipoproteins and decreases paraoxonase (PON) activity in hemodialysis (HD) patients and plays an important part in the development of atherosclerotic cardiovascular diseases. In HD patients, plasma ascorbic acid (AA) levels are decreased either due to the loss by hemodialysis membranes or due to malnutrition and contribute to the imbalance of antioxidant defense mechanisms. We hypothesized that long-term ascorbic acid (AA) supplementation recovers oxidizability of lipoproteins in HD patients by reinforcing PON activity.

METHODS

Twenty-nine adult patients were treated with 100mg and 500mg AA at the end of each HD session thrice a week for two consecutive 16 weeks-periods, respectively. Blood samples were obtained before the first HD session and prior to the first HD sessions following the 100mg AA-supplemented and the 500mg AA-supplemented periods.

RESULTS

PON activities were significantly increased after 100mg (p<0.05) and 500mg AA (p<0.001) supplementation periods compared to the basal level. Apo-B lipoprotein oxidizability (Δ-MDA) was significantly decreased after 500mg AA supplementation compared to both basal (p<0.05) and 100mg AA supplementation periods (p<0.05). Plasma AA concentrations were negatively correlated with Δ-MDA levels (R=-0.327; p<0.01).

CONCLUSION

Our results suggest that long-term parenteral 500mg AA supplementation improves PON activity alleviating apo B-containing lipoproteins oxidizability in HD patients.

Chylous Ascites Following Laparoscopic Donor Nephrectomy: A Case Report

Chylous ascites is a form of peritoneal fluid accumulation that can arise from trauma or lymphatic obstruction. In this report, we present the first case of chylous ascites following laparoscopic donor nephrectomy in our high-volume kidney transplant center. The patient presented to the emergency department three weeks post-procedure with complaints of abdominal distention and discomfort, accompanied by constipation and nausea. Radiological confirmation of ascites was followed by paracentesis, which yielded 20 mL of milky fluid that was analyzed and confirmed as chylous ascites. A subsequent pigtail drain was inserted, resulting in a total drainage of 4 L of fluid. Chylous ascites is a rare complication of abdominal surgeries, with higher body mass index and the American Society of Anesthesiologists physical status score system being significant risk factors. Conservative management involving diet modification is the initial therapy, with percutaneous drainage or more aggressive surgical interventions considered if conservative measures are not effective, with high success rates reported for these interventions. Here, we report a case of chylous ascites following donor nephrectomy as the first case reported from our region.

The Acute Effects and Mechanism of Ketamine on Nicotine-Induced Neurogenic Relaxation of the Corpus Cavernosum in Mice

The present study aimed to investigate the acute effects and the mechanism of ketamine on nicotine-induced relaxation of the corpus cavernosum (CC) in mice. This study measured the intra-cavernosal pressure (ICP) of male C57BL/6 mice and the CC muscle activities using an organ bath wire myograph. Various drugs were used to investigate the mechanism of ketamine on nicotine-induced relaxation. Direct ketamine injection into the major pelvic ganglion (MPG) inhibited MPG-induced increases in ICP. D-serine/L-glutamate-induced relaxation of the CC was inhibited by MK-801 (N-methyl-D-aspartate (NMDA) receptor inhibitor), and nicotine-induced relaxation was enhanced by D-serine/L-glutamate. NMDA had no effect on CC relaxation. Nicotine-induced relaxation of the CC was suppressed by mecamylamine (a non-selective nicotinic acetylcholine receptor antagonist), lidocaine, guanethidine (an adrenergic neuronal blocker), N^w-nitro-L-arginine (a non-selective nitric oxide synthase inhibitor), MK-801, and ketamine. This relaxation was almost completely inhibited in CC strips pretreated with 6-hydroxydopamine (a neurotoxic synthetic organic compound). Ketamine inhibited cavernosal nerve neurotransmission via direct action on the ganglion and impaired nicotine-induced CC relaxation. The relaxation of the CC was dependent on the interaction of the sympathetic and parasympathetic nerves, which may be mediated by the NMDA receptor.

Chylous ascites after donor nephrectomy: MR lymphangiography and lymphatic embolization treatment

Chylous ascites results from the leakage of lipid-rich lymphatic fluid into the peritoneal cavity. Most postsurgical chylous ascites occurs following abdominal aortic surgeries. However, rarely, it is a complication after laparoscopic donor nephrectomy. Postsurgical chylous ascites are often managed with conservative treatment or surgery, but lymphatic embolization may be required. Here, we presented a 45-year-old male patient who was referred for abdominal distension for 1 week after left donor nephrectomy. The drain fluid was milky and fluid analysis revealed high concentrations of triglycerides and chylomicron, confirming diagnosis of chylous ascites. The patient was treated with conservative therapy including a low-fat diet and fluid drainage but continued to have high draining output (up to 1500-2000 mL/24 h). He underwent magnetic resonance lymphangiography and intranodal lymphangiography, revealing extravasation of contrast into the abdomen and the left renal fossa. We embolized the interstitial lymphatic of the left retroperitoneal and lymphatic vessels leak. The patient was discharged from hospital at the fifth day after intervention. In this article, we demonstrate lymphatic lesions, the safety, and success of this technique.

Polymyalgia rheumatica presenting as sternoclavicular arthritis: a case report

BACKGROUND

Polymyalgia rheumatica and giant cell arteritis are systemic inflammatory conditions of the elderly. Polymyalgia rheumatica classically presents as a bilateral proximal muscle pain and stiffness syndrome. Biceps tenosynovitis is the commonest pathology in polymyalgia rheumatica. However according to literature, erosive sternoclavicular arthritis is a rare association of polymyalgia rheumatica. Giant cell arteritis is an inflammatory granulomatous arteritis predominantly involving large cerebral arteries. Thus, its classic clinical presentation includes severe headache with scalp tenderness, jaw claudication, and sudden painless loss of vision. Urological manifestations (prostatic vasculitis and epididymo-orchitis) were seldom reported in giant cell arteritis.

CASE PRESENTATION

A 53-year-old Sinhalese man presented with progressive right-sided shoulder joint pain and neck pain associated with constitutional symptoms and episodic generalized headache. Examination revealed restricted movements of the right shoulder joint with nontender pulsatile bilateral temporal arteries. Blood testing showed elevated erythrocyte sedimentation rate and C-reactive protein. Color Doppler ultrasound of the superficial temporal artery revealed "halo sign." The temporal artery showed infiltration of mononuclear cells in the arterial media and adventitia. Computed tomography revealed right sternoclavicular arthritis with incidental finding of ureteric stricture. The patient was treated with high-dose oral prednisolone, and good clinical and biochemical response was observed during follow-up.

CONCLUSION

Polymyalgia rheumatica-giant cell arteritis may rarely present as erosive sternoclavicular arthritis as the initial manifestation, mimicking many rheumatological conditions. Urological involvement such as ureteric strictures may be rare associations of primary systemic vasculitis. A high degree of suspicion combined with targeted investigations would allow early identification the polymyalgia rheumatica-giant cell arteritis syndrome in the presence of atypical manifestations, leading to improved patient outcomes.

Zinc in Prostate Health and Disease: A Mini Review

Introduction-With the high global prevalence of prostate cancer and associated mortalities, it is important to enhance current clinical practices for better prostate cancer outcomes. The current review is towards understanding the value of Zn towards this mission. Method-General information on Zn in biology and multiple aspects of Zn involvement in prostate health and disease were referred to in PubMed. Results-The most influential feature of Zn towards prostate health is its ability to retain sufficient citrate levels for a healthy prostate. Zn deficiencies were recorded in serum, hair, and prostate tissue of men with prostate cancer compared to non-cancer controls. Zn gut absorption, albumin binding, and storage compete with various factors. There are multiple associations of Zn cellular influx and efflux transporters, Zn finger proteins, matrix metalloproteinases, and Zn signaling with prostate cancer outcomes. Such Zn marker variations associated with prostate cancer recorded from biological matrices may improve algorithms for prostate cancer screening, prognosis, and management when coupled with standard clinical practices. Discussion-The influence of Zn in prostatic health and disease is multidimensional, therefore more personalized Zn requirements may be beneficial. Several opportunities exist to utilize and improve understanding of Zn associations with prostate health and disease.

Intramedullary spinal cord metastasis of clear cell renal carcinoma in a Von Hippel–Lindau patient

Background:

Intramedullary spinal cord metastasis is uncommon and represents only 0.6% of all spinal tumors. Renal cell carcinoma is even less frequent in this group than in lung and breast cancer. Patients with Von Hippel– Lindau disease (VHLd) present spinal hemangioblastoma more frequently.

Case Description:

A 59-year-old female patient presented with medullary syndrome. There was a previous history of VHLd, with a cerebellar hemangioblastoma resection years ago. The radiological investigation showed a cervical intramedullary solid-cystic lesion. The patient has submitted a tumor resection, and a pathological and immunohistochemistry study confirmed clear cell renal carcinoma metastasis.

Conclusion:

In patients with VHLd, the presence of an intramedullary solid-cystic lesion may not represent always a hemangioblastoma. Other diagnostic possibilities must be evaluated, despite being epidemiologically less frequent. Inside the group of patients with VHLd, only a previous case of intramedullary spinal cord renal cell carcinoma was reported in the literature.

Complete spontaneous regression of a primary renal cell carcinoma. Report of a pathological proven case and review of the literature

Regression of primary renal cell carcinoma (RCC) is a rare phenomenon and for several reasons many of the reported cases have been questioned. We present a case that can be considered a true spontaneous and complete regression of a primary RCC. A 79-year-old female underwent nephrectomy because a renal tumor. At the time of surgery image studies showed a small para-aortic lymph node. The tumor measured 3cm and was analyzed completely. Histology showed a fibro-inflammatory lesion with necrosis, foamy macrophages and inflammatory cells. No neoplastic cells were observed and the lesion was interpreted as a localized type of xanthogranulomatous pyelonephritis. One year later a CT control scan, showed that the para-aortic lymph node had increased in size to 4cm. Fine needle aspiration revealed features of clear RCC. Metastatic dissemination was limited so surgical removal of the para-aortic lymph node was performed and the cytologic diagnosis confirmed.

The modified suprapubic prostatectomy technique is associated with improved hemostasis and decline in blood transfusion rate after open suprapubic prostatectomy compared to the freyers technique

Background

Open suprapubic prostatectomy is attended by significant perioperative haemorrhage and need for blood transfusion.

Aim

To share our experience on how the adoption of a modified suprapubic prostatectomy technique has led to improved hemostasis and decline in the blood transfusion rate after open suprapubic prostatectomy in our center.

Patients and Methods

This was a retrospective study comparing two open prostatectomy techniques. The patients in group 1 had Freyer's suprapubic prostatectomy while the patients in group 2 had a modified suprapubic prostatectomy technique. The groups were compared for the effectiveness of hemostasis using change in packed cell volume, clot retention, blood transfusion, and requirement of continuous bladder irrigation.

Results

Both groups were similar concerning age, body mass index (BMI), total prostate-specific antigen (PSA), prostate volume, presence of comorbidities, duration of surgery, and duration of follow-up. The clot retention rate was 34% in group 1 versus 16.4% in group 2, P = 0.030. The clot retention requiring bladder syringe evacuation occurred in 32.1% of the patients in group 1 versus 14.8% in group 2, P = 0.048. The mean change in the packed cell volume (PCV) in group 1 was 8.0 ± 5.3 versus 6.9 ± 3.5 in group 2, P = 0.175. The blood transfusion rate in group 1 was 40.0% versus 13.3% in group 2, P = 0.040. The complication rate in group 1 was 67.2% versus 41.9% in group 2, P = 0.004. A general decline in blood transfusion was noted from January 2011 to December 2019.

Conclusion

The modified suprapubic prostatectomy technique was associated with better hemostasis compared to the standard Freyer's prostatectomy technique. It should be a worthwhile addition to the numerous modifications of the original Freyer's suprapubic prostatectomy technique.

The Role of Surgery in Spinal Intradural Metastases from Renal Cell Carcinoma: A Literature Review

BACKGROUND

Due to the few reported cases of spinal intradural metastases from renal cell carcinoma (RCC), there is no unanimous consensus on the best treatment strategy, including the role of surgery.

METHODS

A wide and accurate literature review up to January 2022 has disclosed only 51 cases of spinal intradural metastases from RCC. Patients with extramedullary (19) and those with intramedullary (32) localization have been separately considered and compared. Demographics, clinical, pathological, management, and outcome features have been analyzed.

RESULTS

Extramedullary lesions more frequently showed the involvement of the lumbar spine, low back pain, and solitary metastasis at diagnosis. Conversely, the intramedullary lesions were most often detected in association with multiple localizations of disease, mainly in the brain. Surgery resulted in improvement of clinical symptoms in both groups.

CONCLUSION

Several factors affect the prognosis of metastatic RCC. The surgical removal of spinal metastases resulted in pain relief and the arresting of neurological deficit progression, improving the quality of life and overall survival of the patient. Considering the relative radioresistant nature of the RCC, the surgical treatment of the metastasis is a valid option even if it is subtotal, with a consequent increased risk of recurrence, and/or a nerve root should be sacrificed.

Treatment of Postoperative Lymphatic Leakage Applying Transpedal Lymphangiography - Experience in 355 Consecutive Patients

PURPOSE

 Report of experience from a single institution in treating postoperative lymphatic leakage (PLL) applying conventional transpedal lymphangiography (TL).

MATERIALS AND METHODS

 453 patients with the initial diagnosis of PLL receiving TL between 03/1993 and 09/2018 were identified in the database. Only patients with confirmed PLL were included in the study. The technical success, safety, and treatment success of TL were evaluated. Independent predictors of TL treatment failure were examined using univariate and multivariate logistic regression analysis.

RESULTS

 355 consecutive patients (218 men, 137 women; median age of 62 years) who underwent TL for PLL (e. g., chylothorax) after ineffective conservative treatment were included. The median time between causal surgery and TL was 27 days. The median technical success rate of TL was 88.5 %, with a median volume of Lipiodol of 10.0 ml. No complication of TL was recorded. Three groups were defined according to the different clinical courses: group A (41/355, 11.5 %) - TL with technical failure; group B (258/355, 72.7 %) - "therapeutic" TL alone with technical success; and group C (56/355, 15.8 %) - "diagnostic" TL with simultaneously invasive treatment (incl. surgical revision and percutaneous sclerotherapy). Treatment success rate and median time to treatment success were higher in group C than in group B, but without significant differences (64.3 % vs. 61.6 %, p = 0.710; six vs. five days, p = 0.065). Univariate and multivariate logistic regression analyses for group B confirmed drainage volume (> 500 ml/d) and Lipiodol extravasation as independent predictors of TL clinical failure (odds ratios [ORs] of 2.128 and 2.372 [p = 0.005 and p = 0.003, respectively]).

CONCLUSION

 TL is technically reliable, safe, and effective in treating PLL. When conservative treatment fails, TL can be regarded as the next treatment option.

KEY POINTS

  · TL is technically reliable, safe, and effective for treating PLL.. · When conservative treatment fails, TL can be regarded as the next treatment option.. · Drainage volume > 500 ml/day is an independent predictor of clinical failure after TL.. · Lipiodol extravasation is an independent predictor of clinical failure after TL..

CITATION FORMAT

· Pan F, Richter GM, Do TD et al. Treatment of Postoperative Lymphatic Leakage Applying Transpedal Lymphangiography - Experience in 355 Consecutive Patients. Fortschr Röntgenstr 2022; DOI: 10.1055/a-1717-2467.

CT, Kumar P, Babu P. G, Walke P, Nayak SK, Sharma R. Teleost Nonapeptides, Isotocin and Vasotocin Administration Released the Milt by Abdominal Massage in Male Catfish, Clarias magur

In the present work the nonapeptides i.e., isotocin and vasotocin alone or in a combination were tested in C. magur to evaluate their effect on stripping by abdominal massage. Also, we used chitosan-carbon nanotube nanocomposites to conjugate the nonapetides isotocin (abbreviated as COOH-SWCNTCSPeP) and isotocin and vasotocin (COOH-SWCNTCSPePs) with the aim of sustaining the effect for a longer duration. The conjugation of nonapeptides with nanocomposites was confirmed by Fourier-transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). Two experiments were conducted to study the effect of naked (without nanoparticles) and conjugated nonapeptides on the milt release by stripping. Both the experiments consisted of eight treatments which included four naked groups two nanoconjugated groups and two controls. Both naked and nonconjugated formulations were successful in stripping the male catfish. The mRNA expression of selected reproductive genes was analysed to decipher the effect of nanopeptides at the molecular level. Nonapeptide treatment either naked or nanoconjugated, resulted in the upregulation of the transcript level of genes. Histological analysis revealed the concentration of spermatozoa was more in peptide injected groups than in the controls. The synergistic effects of nonapeptides and Ovatide had a positive impact on GSI. Thus, the present formulations were successful in stripping the male catfish to obtain the milt with significant reproductive success. Even though the naked groups perform better but the number of males required to fertilize the eggs in nanoconjuagted groups was smaller making it worth using for the delivery of nonapeptides.

Penoscrotal fistula secondary to urethral diverticulum treated with ventral penile skin flap urethroplasty: A case report

Voiding symptoms and penoscrotal mass with/without fistula are typical findings of urethral diverticulum. We present a case of 55-year-old male patient who was evaluated for voiding symptoms, soft palpable penoscrotal mass and fistula. Retrograde urethrography, scrotal ultrasonography and cystoscopy revealed a urethral diverticulum and fistula. The defect developed after excision of the diverticulum associated with the penile ventral urethra was closed with a penile skin flap. In the 6-month follow-up, the patient did not have any voiding complaints and no signs of recurrence. Urethroplasty using a penile skin flap may be preferred in the repair of penile ventral urethral defect.

Effects of behavioural therapy versus interferential current on bladder dysfunction in multiple sclerosis patients; a randomised clinical study

Objectives

This study examines the effect of behavioural therapy (biofeedback) and interferential current on bladder dysfunction in multiple sclerosis patients.

Methods

Fifty patients with secondary progressive type multiple sclerosis (SPMS) suffering from bladder dysfunction were divided equally into two groups randomly. Group A (GA) received behavioural therapy (biofeedback training), while Group B (GB) received interferential current training. Both groups were assessed by urodynamics for detrusor pressure and maximum flow rate before and after eight weeks of behavioural therapy and interferential training.

Results

Both groups, GA and GB, showed significant increase in the detrusor pressure and maximum flow rate after eight weeks of training. There was no significant difference between both methods. However, GA showed more improvement by close observation.

Conclusions

Both behavioural therapy and interferential current training effectively managed bladder dysfunction in patients with SPMS, with more evident effects in behavioural therapy patients by close observation.

Chylous Ascites after Laparoscopic Donor Nephrectomy: Case Report

Chylous ascites refers to the accumulation of chyle in the abdominal cavity. Postoperative chylous ascites is most commonly associated with abdominal aortic surgeries. However, it is a rare complication following laparoscopic nephrectomy. It causes loss of fat, protein, and antibodies causing malnutrition and immunodeficiency. Thus, it is important to treat it as early as possible. We hereby report a case of chylous ascites following laparoscopic donor nephrectomy. A 55-year-old female was admitted at our center 2 weeks after undergoing left laparoscopic donor nephrectomy with abdominal distension and constipation. USG abdomen revealed free fluid in the abdomen. Paracentesis revealed chylous ascites. The patient was started on conservative treatment, including a diet rich in proteins and low in fats; conservative treatment, however, was unsuccessful. Lymphangiography and subsequent embolization of the defect were done, and she made a full recovery.

Conservative management of chylous leak after open radical nephrectomy in an adult patient: a case report and literature review

Background

Chylous ascites is rare but still a recognized complication of retroperitoneal surgeries caused mostly by inadvertent trauma to lymphatic channels. In this article, we present a case report and literature review of adult patient, with malignant tumor of upper urinary tract, who developed chylous leak after open nephrectomy.

Case presentation

We present a case of chylous leak for a 67-year-old female patient, presented to urology clinic with complaining of left loin pain and gross hematuria, found to have upper urinary tract tumor, she underwent open radical nephrectomy with lymph nodes dissection, and postoperatively she had chylous leak that is treated conservatively using octreotide and spironolactone without the need for total parenteral nutrition.

Conclusion

Conservative management should always be the first choice of management of chylous leak and chylous ascites. Careful anatomical identification and securing of the periaortic lymphatics are needed to decrease the risk of postoperative chylous leak and ascites.

Understanding Patient Expectations and Determinants of Satisfaction in an Outpatient Urology Clinic at an Academic Medical Center

OBJECTIVE

To examine and better understand expectations and facilitators of satisfaction amongst patients presenting to an ambulatory urology clinic at an academic medical center.

METHODS

Patients completed an anonymous survey regarding expectations for their clinic visit. Patients were included in the investigation if they were aged 18-89 years and had the ability to complete informed consent. Chi-square analysis was then used to analyze the collected data.

RESULTS

A total of five hundred patients were enrolled in the study. Patients were predominantly white males and were older than 60 years of age. Most patients had at least a college education and drew an annual household income between $40,000-$99,999. Most enrollees were return patients (74.8%). Most expected to be seen within 3-7 days of referral and expected 16-30 minutes with their provider. Patients noted they would not be equally satisfied seeing a physician vs advanced practice provider on their initial visit but would on a return visit. About half (52%) of the cohort stated they would be dissatisfied with their clinic experience if their expectations were not met. Significance was found between variables including age, race, gender and type of visit and their survey responses.

CONCLUSION

Patient satisfaction remains an important measure for the quality and safety of patient care. This investigation highlighted patient prioritization of time to be seen after referral and the provider that cares for them at both initial and follow-up visits. Future research is needed to enhance stakeholder understanding of precisely how expectations impact overall satisfaction.

The Effect of Immunosuppressant Therapy Adherence on the Comfort of Liver Transplant Recipients

Inadequate immunosuppressive therapy causes rejection, whereas an overdose may lead to infections or malignancy to affect a patient's life and comfort. This study used a descriptive correlational design to determine how compliance with immunosuppressive therapy affected the well-being of liver transplant patients. The study was conducted in the liver transplant unit of a university hospital with 103 patients who underwent liver transplant surgery. The target population included patients who received treatment in liver transplant clinics between July 2016 and August 2017. Mean age of the patients in the study was 44.66 ± 14.86 years and the time after transplant was 15.48 ± 16.90 months on the average. A significant difference was found between mean General Comfort Scale scores according to the variable of adherence status (t = 6.898, p < .05). Simple linear regression analysis showed a positive moderate, significant correlation between the adherence variable and mean General Comfort Scale scores (R = 0.543, p < .001). It was found that the patients who adhered to immunosuppressive therapy experienced higher levels of comfort. Therefore, arrangements to improve patient adherence to therapy, hence comfort, are recommended, as well as periodic evaluations of patient comfort levels.

Safe Hb Concentration Measurement during Bladder Irrigation Using Artificial Intelligence

We have developed a sensor for monitoring the hemoglobin (Hb) concentration in the effluent of a continuous bladder irrigation. The Hb concentration measurement is based on light absorption within a fixed measuring distance. The light frequency used is selected so that both arterial and venous Hb are equally detected. The sensor allows the measurement of the Hb concentration up to a maximum value of 3.2 g/dL (equivalent to ≈20% blood concentration). Since bubble formation in the outflow tract cannot be avoided with current irrigation systems, a neural network is implemented that can robustly detect air bubbles within the measurement section. The network considers both optical and temporal features and is able to effectively safeguard the measurement process. The sensor supports the use of different irrigants (salt and electrolyte-free solutions) as well as measurement through glass shielding. The sensor can be used in a non-invasive way with current irrigation systems. The sensor is positively tested in a clinical study.

Emerging agents for the treatment of metastatic urothelial cancer

Over the past few decades, platinum-based combination chemotherapy (PBCC) has been the preferred initial therapy for metastatic urothelial cancer (mUC). However, despite a response rate of approximately 50%, a small proportion of patients with distant metastases may be cured by cisplatin-based combination chemotherapy (CBCC). In addition, up to 50% of patients are not eligible for CBCC due to age or comorbidities. Furthermore, adverse effects from PBCC are a major concern. The emergence of check-point inhibitors (CPIs), particularly those with antibodies directed against programmed cell death 1 protein (PD-1) or its ligand (PD-L1), advanced the treatment of mUC. Avelumab switch-maintenance therapy is recommended in patients with locally advanced or mUC who did not progress on initial PBCC. With the recent advances in tumor molecular biology and the discovery of actionable therapeutic targets, the clinical application of targeted therapy is now being explored for mUC. Erdafitinib, a tyrosine kinase inhibitor of FGFR1-4, has shown positive outcomes in patients with advanced UC with FGFR alterations. Another recent technological development is antibody-drug conjugates (ADCs), which are complex molecules composed of an antibody linked to a biologically active cytotoxic drug (payload) that targets and kills tumor cells while sparing healthy cells. Enfortumab vedotin, a monoclonal antibody targeting nectin-4 conjugated to monomethyl auristatin E, has demonstrated clinically significant efficacy in patients who do not respond to both cytotoxic chemotherapy and CPIs. In this review, we describe switch-maintenance therapies using CPI, various targeted agents, and ADCs that have been investigated for mUC treatment.

Clinical therapies and nano drug delivery systems for urinary bladder cancer

Bladder cancer is the 10^th most commonly occurring malignancy worldwide with a 75% of 5-year survival rate, while it ranks 13^th among the deaths occurring due to cancer. The majority of bladder cancer cases are diagnosed at an early stage and 70% are of non-invasive grade. However, 70% of these cases develop chemoresistance and progress to the muscle invasive stage. Conventional chemotherapy treatments are unsuccessful in curbing chemoresistance, bladder cancer progression while having an adverse side effect, which is mainly due to off-target drug distribution. Therefore, new drug delivery strategies, new therapeutics and therapies or their combination are being explored to develop better treatments. In this regard, nanotechnology has shown promise in the targeted delivery of therapeutics to bladder cancer cells. This review discusses the recent discovery of new therapeutics (chemotherapeutics, immunotherapeutic, and gene therapies), recent developments in the delivery of therapeutics using nano drug delivery systems, and the combination treatments with FDA-approved therapies, i.e., hyperthermia and photodynamic therapy. We also discussed the potential of other novel drug delivery systems that are minimally explored in bladder cancer. Lastly, we discussed the clinical status of therapeutics and therapies for bladder cancer. Overall, this review can provide a summary of available treatments for bladder cancer, and also provide opportunities for further development of drug delivery systems for better management of bladder cancer.

Extraperitoneal versus transperitoneal approach for robot-assisted radical prostatectomy: a contemporary systematic review and meta-analysis

We aim to evaluate the differences in peri-operative characteristics, surgical complications, and oncological and functional control between the extraperitoneal RARP (EP-RARP) and transperitoneal RARP (TP-RARP). A comprehensive database search was performed up to March 2021 for eligible studies comparing outcomes between EP-RARP versus TP-RARP. This study was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and was registered with PROSPERO. A leave-one-out sensitivity analysis was performed to control for heterogeneity and risk of bias. A total of 16 studies were included with 3897 patients, including 2201 (56.5%) EP-RARPs and 1696 (43.5%) TP-RARPs. When compared to TP-RARP, EP-RARP offers faster operative time (MD - 14.4 min; 95% CI - 26.3, - 2.3), decreased length of post-operative stay (MD - 0.9 days, 95% CI - 1.3, - 0.4), and decreased rates of post-operative ileus (RR 0.2, 95% CI 0.1, 0.7) and inguinal hernia formation (RR 0.2, 95% CI 0.1, 0.5). There were no significant differences in total complications, estimated blood loss, positive surgical margins, or continence at 6 months. In this review, EP-RARP delivered similar oncological and functional outcomes, while also offering faster operative time, decreased length of post-operative stay, and decreased rates of post-operative ileus and inguinal hernia formation when compared to TP-RARP. These findings provide evidence-based data for surgical approach optimization and prompts future research to examine whether these findings hold true with recent advances in single-port RARP and outpatient RARP.

Beyond conventional immune-checkpoint inhibition - novel immunotherapies for renal cell carcinoma

The management of advanced-stage renal cell carcinoma (RCC) has been transformed by the development of immune-checkpoint inhibitors (ICIs). Nonetheless, most patients do not derive durable clinical benefit from these agents. Importantly, unlike other immunotherapy-responsive solid tumours, most RCCs have only a moderate mutational burden, and paradoxically, high levels of tumour CD8+ T cell infiltration are associated with a worse prognosis in patients with this disease. Building on the successes of antibodies targeting the PD-1 and CTLA4 immune checkpoints, multiple innovative immunotherapies are now in clinical development for the treatment of patients with RCC, including ICIs with novel targets, co-stimulatory pathway agonists, modified cytokines, metabolic pathway modulators, cell therapies and therapeutic vaccines. However, the successful development of such novel immune-based treatments and of immunotherapy-based combinations will require a disease-specific framework that incorporates a deep understanding of RCC immunobiology. In this Review, using the structure provided by the well-described cancer-immunity cycle, we outline the key steps required for a successful antitumour immune response in the context of RCC, and describe the development of promising new immunotherapies within the context of this framework. With this approach, we summarize and analyse the most encouraging targets of novel immune-based therapies within the RCC microenvironment, and review the landscape of emerging antigen-directed therapies for this disease.

Buccal mucosa graft in surgical management of Peyronie's disease: Ultrasound features and clinical outcomes

INTRODUCTION

Plaque incision and grafting represent the best surgical approach to the Peyronie's Disease (PD). The grafting procedures must be restricted to patients with normal preoperative status, excessive curvature and/or deformities. However, the ideal graft has not been identified yet. Buccal mucosa grafts (BMG) provided excellent short-term results, ensuring the fast return of spontaneous erections and preventing shrinkage, which is the main cause of graft failure. Another fearsome surgical complication is de novo erectile dysfunction (ED). We report our results with BMG focusing on the analysis of ultrasonographic and clinical data demonstrating buccal mucosa as determinant factor that allow to avoid complications.

MATERIALS AND METHODS

From 2013 to 2019 we performed at our Urology Unit 27 corporoplasties with BMG to correct complex penile curvature due to PD. Clinical, post-surgical and ultrasound follow up data were evaluated. All patients were no responders to medical treatment or previous surgical procedures. The evaluation period was 72 months. Data regarding pre-operative work-up, including IIEF (IIEF-5) questionnaire administration, detailed clinical history and penile dynamic ultrasound (PGE1-induced erection) were collected. The time of spontaneous erection resumption was recorded for each patient. To improve blood supply to the graft, a low-dose PDE5-i was prescribed for all patients for a period of two months, starting immediately after discharge. Check-ups were scheduled every 3 months, starting from 1 month after surgery. In each visit, patients underwent a penile ultrasound evaluation of graft features. After 6 and 12 months, all patients underwent a penile dynamic ultrasound for Erection Hardness Score determination, then standard ultrasound and clinical evaluation yearly. Our analyses were focused on BMG as a major determinant of the surgical success.

RESULTS

Mean age of 27 patients was 57 years (42-71) with a maximum follow up time of 72 months and minimum of 3. Site of penile curvature was dorsal in 18 (67%) patients, ventral in 2 (7%), complex in 7 (26%). The degree of the curvature was < 60° in 11 (41%) patients, > 60° in 16 (59%). Straightening of penis was reached in 100% of cases. Penile shortening resulted in 7.4% (2/27). De novo ED appeared in 2/27 cases with a post-operative rate of PDE5i users increasing from 12 to 14 patients (45% vs 52%). Ultrasound aspects of BMG, recorded at every follow up visit, results in a hypoechoic plaque with an iperechoic rim that become isoechoic over the time in all cases. No case of scars or seroma was registered. Small intra-graft cystic lesions were highlighted in 3 cases (11%).

CONCLUSIONS

BMG may represent a good choice in grafts procedures for PD surgical management. The functional results obtained by BMG procedures were related to the good anatomical characteristics of the patch and were highlighted in our series by use of penile ultrasound, during the follow up period.

Optimising patients with long-term spinal cord injury for nephrectomy: A review of pre-, peri- and post-operative factors to safeguard outcomes

Objectives:

To review the potential challenges a urologist may encounter when embarking on simple/partial/radical nephrectomy in patients with long-term spinal cord injury and propose strategies to pre-empt and manage these.

Materials and methods:

Comprehensive literature review via PubMed, MEDLINE® and Google™ Scholar searching for relevant scientific articles published to date in English. Recommendations for strategies to safeguard surgical outcomes discussed with a panel of experienced upper-tract urologists.

Results:

Pre-operative considerations:  - urethral assessment via flexible cystoscopy due to higher incidence of urethral pathology in spinal cord injury;  - assessing for chronic constipation and distended bowel; and  - considering glomerular filtration rate assessment by radio-isotope techniques, such as 51chromium-EDTA Peri-operative considerations:  - adequate theatre staffing for safe patient transfer; and  - planned choice of incision, due to higher incidence of previous abdominal surgery, stoma bags and/or foreign body devices. Post-operative considerations:  - ensuring attending medical staff are trained to recognise autonomic dysreflexia;  - early re-mobilisation with physiotherapists experienced in treating spinal cord injury; and  - attentive antibiotic stewardship due to higher risk of hospital-acquired or urinary infections

Conclusions:

Patients with long-term spinal cord injury pose significant potential challenges in the pre-, peri- and post-operative stages of nephrectomy. Familiarisation and optimisation of such factors is recommended to safeguard outcomes.

Level of evidence:

Not applicable for this multicentre audit.

The negative aftermath of prostate biopsy: prophylaxis, complications and antimicrobial stewardship: results of the global prevalence study of infections in urology 2010-2019

PURPOSE

To evaluate and report the complications, and to analyse antimicrobial stewardship aspects following prostate biopsies (P-Bx) based on the data from a 9-year global study.

METHODS

The primary outcome was to compare complications after P-Bx between patients of two cohorts: 2010-2014 and 2016-2019. Primary outcomes included symptoms of lower and severe/systemic urinary tract infection (LUTIS and SUTIS, respectively), and positive urine culture. Readmission to hospital after P-Bx, need for additional antimicrobial therapy, consumption of different antimicrobial agents for prophylaxis and therapy were evaluated. Students t test and chi-square test were used for comparative analyses.

RESULTS

Outcome data were available for 1615 men. Fluoroquinolones-based prophylaxis rate increased from 72.0% in 2010-2014 to 78.6% in 2015-2019. Overall rates of complications increased from 6 to 11.7% including an increase in symptomatic complications from 4.7 to 10.2%, mainly due to an increase in LUTIS. Rates of patients seeking additional medical help in primary care after P-Bx increased from 7.4 to 14.4%; cases requiring post P-Bx antibiotic treatment increased from 6.1 to 9.7%, most of which received fluoroquinolones. Transperineal P-Bx was significantly associated with LUTIS. Following transrectal P-Bx, 2.8% developed febrile infections and 4.0% required hospitalisation. Two men (0.12%) died after transrectal P-Bx due to sepsis.

CONCLUSIONS

The rates of complications after P-Bx tended to increase in time, as well as rates of patients seeking additional medical help in the post-P-Bx period. To reduce the risk of infectious complications and to comply with the principles of antibiotic stewardship, clinicians should switch to the transperineal biopsy route.

Long-Term Undesirable Consequences of Penile Skin Island Flap to Correct Penoescrotal Transposition: A Case Report and Review of Literature

Hypospadias is a congenital malformation of the male lower urinary tract, consisting of a ventral urethral opening proximal to the glans penis. This condition is corrected surgically in the paediatric age, with a great variety of techniques available. Traditionally, a tubularized genital skin was used for one- or two-stage repairs. Nowadays, the tendency is to use preputial or oral mucosa grafts, dorsally located, to avoid diverticula formation and prevent hair growth in the neourethra. We present a case of a patient born with proximal hypospadias with penoscrotal transposition, surgically corrected in his childhood, using dorsal penile skin island flap. The patient is referred to urology consultation in his adulthood for a weak urinary stream, recurrent infections, and a large amount of hair exiting through the urethral meatus.

Recurrent DHA nephropathy in renal allograft-revisiting clinicopathological aspects of a rare entity

Background

Adenine phosphoribosyltransferase (APRT) enzyme deficiency is a rare autosomal recessive disorder of purine metabolism affecting mainly the kidneys. It can present at any age with varying degrees of acute and chronic renal damage. Though xanthine dehydrogenase inhibitors offer effective control over the disease process, delay in diagnosis and treatment often lead to compromised function of native and even graft kidneys.

Methods

We have done a retrospective search of records of renal biopsies reported at our center during the 5-year period from 2014 to 2018 to identify biopsies with 2,8-dihydroxyadenine crystal deposits. The demographic, clinical, and histopathological findings in these cases were studied and reviewed in the light of available literature.

Results

Of 9059 renal biopsies received during the study period, 3 cases had the rare 2,8- dihydroxyadenine (DHA) crystals. All of them were diagnosed for the first time on allograft biopsies.

Conclusion

A high index of clinical suspicion together with the characteristic microscopic appearance of crystals on renal biopsy and urine microscopy can clinch the diagnosis of this rare disease. Hence, improving awareness about this entity among clinicians and pathologists is extremely important.