Small Bladder Research Articles

VP13.06: First trimester diagnosis of Sirenomelia associated with an abdominal cyst

Sirenomelia or the mermaid syndrome is a rare and lethal congenital anomaly. It is characterised by fusion of lower extremities associated with genitourinary, anorectal and cardiovascular anomalies. Pathognomic finding is a single umbilical artery, the persistent' vitelline artery' connected directly to aorta. Sirenomelia has strong association with maternal diabetes mellitus. We report the first trimester diagnosis of Sirenomelia associated with abdominal cyst. It was type VII Sirenomelia. Abdominopelvic cyst was extending from pelvis up to stomach bubble. Other associated findings included a single umbilical artery originating from Aorta, Sacral agenesis, absent ductus venosus with umbilical vein directly opening in right atrium. Urinary bladder was persistently non visualised. Autopsy confirmed the abdominal cyst to be blind ended cloaca. A small tubular bladder and distal colon were connected to this cloaca. Kidneys were normal and ureters were opening in the cloaca. External genitalia and anal opening were absent. Karyotype was normal. Protocol-based anatomic evaluation aids the first trimester diagnosis of Sirenomelia and associated anomalies. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

English

Iatrogenic bladder injuries with Intra-peritoneal extravasations are standardly managed surgically. However, we are presenting a case of iatrogenic intra-peritoneal bladder injury which developed after an emergency caesarean section that was managed successfully by conservative therapy. The trial of conservative approach may prove beneficial to minimize the chances of any invasive interventions in such cases. Bladder injuries are of two types namely intra-peritoneal and extra-peritoneal. Of which, extra-peritoneal is most common type.1 Bladder laceration happens during separation of bladder from uterine cervix during caesarean sections and abdominal hysterectomies.2 Usually bladder injuries are identified intra-operatively and managed on table. If diagnosis is made post-operatively, then management becomes challenging due to non-specific clinical features, exposure to radiation, sepsis due to urinary extravasation and prolonged hospital stay, psychological stress to both patient and surgeon. The clinical features suspicious of bladder injury are abdomen distension, urinary ascites, blood-stained urine, abdominal pain, paralytic ileus, fever and deranged renal parameters.3 Extra-peritoneal and intra-peritoneal bladder ruptures are treated differently. According to American Urological Association (AUA) guidelines, Intraperitoneal bladder injury needs surgical repair. There are limited case reports in literature about conservative management of small intra-peritoneal bladder lacerations. This is a case report of one such intra-peritoneal bladder injury treated with non-operative approach.

Occupational exposure to hexavalent chromium. Part II. Hazard assessment of carcinogenic effects

Hexavalent chromium (Cr(VI)) compounds have been studied extensively and several agencies have described their toxicological profile. In the past, personnel of the Dutch Ministry of Defence may have been exposed to Cr(VI) during maintenance activities on NATO equipment. To investigate if this exposure may have caused irreversible adverse health effects, the Dutch National Institute for Public Health and the Environment (RIVM) summarized all available knowledge from previous evaluations. This information was complemented with a scoping review to retrieve new scientific literature. All scientific evidence was evaluated in workshops with external experts to come to an overview of irreversible adverse health effects that could be caused by occupational exposure to Cr(VI) compounds. This review provides the hazard assessment for occupational exposure to Cr(VI) and carcinogenic effects by integrating and weighting evidence provided by international agencies complemented with newly published studies. It was concluded that occupational exposure to Cr(VI) can cause lung cancer, nose and nasal sinus cancer in humans. Cr(VI) is suspected to cause stomach cancer and laryngeal cancer in humans. It is currently insufficiently clear if Cr(VI) can cause cancer of the small intestine, oral cavity, pancreas, prostate or bladder in humans.

239Incidence and potential risk factors of a second primary cancer among 217,702 colorectal cancer survivors

Abstract Background Survival of colorectal cancer (CRC) has improved markedly but risk of an independent second primary cancer (SPC) increases. We determined incidence and potential risk factors of SPC following CRC. Methods We obtained data from 217,202 CRC cases (ICD-10 C18-C20, aged ≥20 years) diagnosed between 1990-2013 from the German Centre for Cancer Registry Data. Cancers arising in a distinct site (excluding non-melanoma skin cancer) and/or of a different histology group were classified as SPCs. Standardised incidence ratios (SIR) and 95% confidence intervals compared the excess risk to the general population, stratified by age, sex and CRC sub-site. Cox proportional hazards models identified potential risk factors of SPC. Results Following CRC (median age 70 years), 18,751 SPCs occurred (8.63%; median age 69 years). SPC incidence increased by 36% in males (SIR: 1.36 [1.34-1.38]), 46% in females (SIR: 1.46 [1.43-1.49]) and doubled for cases <65 years (SIR: 2.08 [1.99-2.17]). Common SPC sites following colon cancer included the small intestine, stomach, liver, pancreas, bladder and kidney. Common male-specific sites included prostate and in females: breast, uterus and ovary. Similar sites were observed following rectal cancer, particularly in cases <65 years. Age, male sex and tumour size (T1, T2) were potential risk factors of SPC. Therapy of CRC (including radiotherapy) did not demonstrate an elevated risk. Conclusions CRC survivors have an increased risk of SPC, particularly due to age, sex and tumour size. Key messages Colorectal cancer survivors have an increased risk of a SPC. Age, sex and tumour size are associated risk factors.

Understanding an unusual urothelial disorder: cystitis cystica et glandularis

Objectives: To study the presentation and natural course of cystitis cystica et glandularis. Methods: A retrospective analysis of patients with histopathologically confirmed cystitis cystica et glandularis from March 2016 to March 2018 who at least completed their 2 years’ follow-up was performed. Perioperative details along with the last available follow-up were included in the analysis. Results: A total of 10 patients were included. The mean age (± standard deviation) was 33.4 (±14.0) years and nine (90%) were men. The most common presentation was storage and voiding lower urinary tract symptoms (80%) along with haematuria (40%) and dysuria (20%). Four patients had the presence of hydronephrosis in preoperative imaging, of which three patients had bilateral mild hydroureteronephrosis. All the patients underwent transurethral resection of the bladder tumour as all were diagnosed with urinary bladder mass on preoperative imaging. All the patients had a trigonal lesion with a bullous appearance partially obstructing the bladder neck. Six patients underwent double J stenting in the perioperative period. The mean (± standard deviation) follow-up duration was 32.8 (±7.5) months. Patients were kept on regular surveillance with imaging and cystoscopy as indicated. Eight patients (80%) developed recurrence in the follow-up period. The mean number of recurrences was 1.5 (±1.1). One of the patients had to undergo augmentation ileocystoplasty with bilateral ureteric reimplantation because of the recurrent lesion with small contracted bladder, while another patient underwent cystectomy with urinary diversion owing to recurrence and refractory lower urinary tract symptoms. Besides, there was no evidence of malignancy after this entity in any of the patients. Conclusion: Cystitis cystica et glandularis is a rare clinic pathological entity which often mimics bladder tumour. Cystitis cystica et glandularis is common in men and often presents with lower urinary tract symptoms. Transurethral resection forms the mainstay of treatment. However, it is often associated with upper tract hydronephrosis. Its controversial premalignant nature compounded with recurrence and risk of upper tract deterioration warrants close surveillance. Level of evidence: 4

Small cell carcinoma of the bladder: A population-based analysis of long-term outcomes after radical cystectomy and bladder conservation with chemoradiotherapy.

We aimed to describe the oncological outcomes after radical cystectomy and chemo-radiation for localized small cell bladder cancer (SCBC). This population-based analysis of localized SCBC from 1985-2018 in British Columbia included an analysis (analysis 1) of cancer-specific survival (CSS) and overall survival (OS) of patients treated with curative-intent radical cystectomy (RC) and radiation (RT), and an analysis (analysis 2) of CSS and OS in patients treated with RC and chemoRT consistent with the SCBC Canadian consensus guideline. Seventy-seven patients who were treated with curative intent were identified: 33 patients had RC and 44 had RT. For analysis 1, five-year OS was 29% and 39% for RC and RT, respectively (p=0.51), and five-year CSS was 35% and 52% for RC and RT, respectively (p=0.29). On multivariable analysis, higher Charlson comorbidity index (CCI) and the lack of neoadjuvant chemotherapy (NAC) were associated with worse OS, while higher CCI and Eastern Cooperative Oncology Group (ECOG) were associated with worse CSS. For analysis 2, five-year OS was 56% and 58% for the RC and chemoRT groups, respectively (p=0.90), and five-year CSS was 56% for RC and 71% for chemoRT (p=0.71). Four of 42 (9.5%) chemoRT patients had RC at relapse. SCBC is a rare entity with a poor prognosis. RC and chemoRT offer similar CSS and OS for localized SCBC, even when focusing the analysis on patients treated according to the modern consensus guidelines. NAC should be considered for eligible patients. Both chemoRT and RC treatment options should be discussed with patients with SCBC.

EN BLOC RESECTION OF BLADDER TUMOR(EBRT) USING MONOPOLAR CAUTERY; A TERTIARY HOSPITAL EXPERIENCE.

Bladder cancer is a growing health problem with the second most common urological malignancy. It accounts for around 7% of a new cancer diagnosis. Tobacco smoking is the most important risk factor accounting for around 50% of cases. Tobacco smokes contain aromatic amines and polycyclic hydrocarbons which are excreted through kidneys. The goal of transurethral biopsy in NMIBC(non-muscle invasive bladder cancer) is to make the correct diagnosis and completely remove all visible lesions which can be either resected piecemeal or en bloc. The presence of detrusor muscle in the specimen is an important factor for planning treatment and prognosis. Here we share our experience of EBRT using monopolar cautery describing the feasibility, safety, and adequacy of the procedure in the management of small urinary bladder tumors. The study was conducted in the Department of Urology, SMS Medical College, and attached hospitals. All the patients with clinical NMIBC during study duration were admitted and a total of 25 patients above the age of 18yrs, having papillary bladder tumors less than 3 cm were included in the study. Complete resection by the en bloc technique was achieved in all 25 cases with no requirement of conversion to conventional TURBT. Our study also shows the presence of detrusor muscle in 22 specimens out of 25. And only two patients developed severe bleeding which needed a blood transfusion. Thus, ERBT using monopolar cautery is safe and feasible for the complete resection of NMIBCs with a high rate of detrusor-positive specimens in the selected patient population.

Augmentation Cystoplasty in Children: Institute of Kidney Diseases Peshawar Experience

Objective: The aim of this study is to share our single-center experience of Augmentation Cystoplasty (AC) in children regarding indications, bowel segment used, associated procedures, and its complications. Materials and Methods: We analyzed data of all pediatric patients who underwent AC at Institute of Kidney Diseases (IKD), Peshawar between July 2017 and March 2020. Results: A total of 18 pediatric patients are included in the study who underwent Bladder augmentation (BA) either isolated in 1 (5.5%), or along with other associated procedures like Mitrofanoff 17 (94.4%), Antegrade Continent Enema (ACE) 6 (33.3%), Bladder Neck Reconstruction (BNR) 5 (27.7%) and Bilateral ureteric Re-implantation (B/L UR) in 3 (16.6%). Indication for Bladder augmentation were Neurogenic bladder (NGB) 13 (72.2%), Exstrophy Epispadias Complex (EEC) 3 (16.6%) and Posterior urethral value with small functional capacity bladder 2 (11.1%). Small gut used in 15 (83.3%) and large gut in 3 (16.6%) for BA. For Mitrofanff associated with bladder augmentation, Appendix was used in 14 (82.35%) and small gut (Monti) in 3 (17.6%) cases. For ACE associated with BA, in 4 (66.6%) Appendix used as right-sided ACE and in 2 (33.3%) small gut (Monti) as left-sided ACE. No intraoperative complications noted, while early post-op complications, 2 wound infection and 1 urinary leakage from wound, were noted in 3(16.6%) cases and late post-op complications (stomal stenosis) in 4(22.2%) patients.

Assessment of Correction of Female Stress Urinary Incontinence with Trans Obturator Tape; Traditional versus Tailored

Abstract Background: Female genuine stress urinary incontinence (SUI) affects a great number of females, with important social and economic consequences. SUI is more frequent after several deliveries, after menopause as a result of changes in the urethral support or the sphincter mechanism. Aim of Study: To compare traditional tension free trans-obturator tape (TOT) and surgeon tailored mesh (STM) in treatment of female stress urinary incontinence as regard of safety, efficacy, side effects, cost, and follow-up. Patients and Method: Prospective randomized study was done on sixty three female patients were suffered SUI with determining of eligibility of the study as shown in COSORT flow chart Fig. (1) at Al Zahraa University Hospital, Al Azhar University from December 2016 to April 2019. All patients subjected to full history, general, and local examination (cases of cystocele, rectocele, or previous vaginal surgeries were excluded). Cystometrogram (CMG) was done for exclusion of uninhibited detrusor contractions, small bladder capacity ( 100 CC) assessed by ultrasonography were excluded from this study. All patients requested surgical treatment and provided informed written consent, and the study was approved by the ethical committee. With follow-up for six month post-operatively. Results: Depending on subjective criteria obtained from the Patric questionnaire, and objective criteria from physical examination.As regards traditional tape group, 13 patients (43.33%) were cured; two patients (6.67%) improved with no failed cases and STM group 14 patients (46.67%) were cured; one patient (3.33 %) improved with no failed cases (p-value 0.542, Pearson Chi-Square test). Conclusions: TOT (outside in technique) using both STM and traditional tape are minimally invasive techniques and are equally effective and safe in treatment of pure female SUI, with short hospital stay which reduces the cost of surgery. Both techniques could be used in treatment of pure SUI with good outcome. This technique is more economical due to the cheap ordinary polypropylene mesh. So, it should be considered as a low-cost alternative to the available commercial kits in the treatment of female SUI, mainly for public health systems with few financial resources.

Robot-Assisted Buccal Mucosa Graft Ureteroplasty for Bilateral Long Segment Mid-Ureteral Strictures

Abstract Background/Objective: Managing long-segment bilateral ureteral strictures in the mid/upper ureters with chronic renal insufficiency (CRI) and small bladder capacity is challenging. A Boari...

Multiomic, plasma-only ctDNA NGS assay for minimal residual disease (MRD) detection in solid tumors.

3045 Background: Detection of minimal residual disease (MRD) by circulating tumor DNA (ctDNA) post-curative intent treatment is predictive of recurrence in many solid tumors. Due to biological challenges with low ctDNA shed in early-stage disease and potential to detect non-tumor derived alterations in plasma (e.g. CHIP), most ctDNA MRD assays are dependent on a priori knowledge of genomic alterations from tumor tissue to achieve high sensitivity and specificity. Tissue-dependent methods limit the clinical application of a MRD assay, especially in cancer types where tissue biopsy is challenging, neoadjuvant therapy (NAT) is standard of care, and/or rapid turnaround times are needed for clinical decision making. We previously validated an assay (Guardant Reveal) that combines somatic and epigenomic analysis to detect ctDNA from early-stage colorectal tumors without tumor tissue or peripheral blood cells. Here we describe the expansion of this assay to detect MRD across multiple tumor types. Methods: Cell-free DNA (cfDNA) fragments are extracted from patient plasma, partitioned based on methylation fraction, enriched using a panel to target informative genomic and epigenomic regions, barcoded, and pooled for sequencing. Methylation status is determined non-destructively and with minimal loss of molecules, allowing sensitive genomic and epigenomic analysis of the same cfDNA fragments. A single assay with a total panel size of 5.3 Mb was developed for MRD analysis in multiple cancer types, including CRC, Lung and Bladder. A “ctDNA detected” result is defined by the de novo identification of tumor-derived somatic variants and/or the observation of a tumor-specific methylation profile exceeding predefined thresholds. Results: The assay performance was tested using 163 pre-treatment clinical samples from patients with early-stage non small cell lung cancer (NSCLC) and bladder cancer and 133 self-declared healthy donors. Sensitivity for pre-treatment detection in NSCLC was 68.9% at 95% specificity (20/42 Stage I: 47.6%, 25/30 Stage II: 83.3%, 19/21 Stage III: 90.5%). Sensitivity for bladder cancer was 44.2% at 95% specificity (13/43 NMIBC: 30.2%, 18/27 MIBC: 66.7%). Additional development from larger cohorts and other tumor types is ongoing and data will be presented as available. Conclusions: Using cancer-specific genomic and epigenomic signals combined with learning-based classifiers, we developed a highly specific method for detecting the presence of ctDNA in early-stage NSCLC and bladder cancer patients from plasma without the need for tumor tissue but with comparable sensitivities to tissue-dependent approaches. A plasma-only MRD assay will allow for greater clinical impact by overcoming the challenges of tissue procurement, particularly following NAT, and enabling faster time to results.

All in one, a rare case presentation of genitourinary tuberculosis

BackgroundThe kidneys are the most common site of urogenital tuberculosis. Tuberculosis of the urethra and bladder is caused by a descending infection through the urinary collecting system. Urogenital tuberculosis affects 2% to 10% of pulmonary tuberculosis cases in developed countries, but 15% to 20% in developing countries.Case presentationA 55-year-old male referred to us with bilateral percutaneous nephrostomy, which was done for obstructive uropathy with raised creatinine of 4.5 mg/dl. He was diagnosed with pulmonary tuberculosis two years back and took antitubercular therapy for one year. His routine blood parameters were within normal limits. On evaluation with bilateral nephrostograms, he was found to have right-sided pelvic ureteric junction stricture and left-sided vesicoureteric junction stricture. On retrograde urethrography, there was evidence of 4-cm stricture at proximal bulbar urethra. On contrast-enhanced CT whole abdomen, he was found to have small-sized right kidney and findings in par with nephrostogram with thickened, small capacity bladder (thimble bladder). Patient underwent urethroscopy and urethral dilatation followed by augmentation ileocystoplasty with left ureteric reimplantation and right nephrectomy done at 3 months of follow-up.ConclusionOnly 1.9 percent to 4.5 percent of all cases of urogenital tuberculosis are urethral tuberculosis, and it never happens alone. For urogenital tuberculosis diagnosis, imaging techniques are up to 91.4 percent sensitive, with intravenous urography and abdominal computerised tomography being the most widely used. Diagnosis relies on a range of signs such as “caliceal irregularities; infundibular stenosis; pseudotumor or renal scarring; nonfunctioning kidney; renal cavitation; urinary tract calcification (present in 7% to 19% of cases); collecting system thickening, stenosis, or dilatation; contracted bladder”.

46. Management of Hematocolpos in Lower Vaginal Atresia by Image-Guided Drainage with Interventional Radiology: A Case Series

<h3>Background</h3> Obstructive uterovaginal anomalies such as lower vaginal atresia (LVA), can lead to hematocolpos (HC) and subsequent pain at presentation. Definitive management of long LVA requires vaginoplasty with diligent postoperative dilation to prevent vaginal stenosis. However, many adolescents are not emotionally mature enough to adhere to this. Menstrual suppression and delayed vaginoplasty is recommended, however pain symptoms may require drainage of HC. We present a novel approach to management of symptomatic HC via image-guided percutaneous drainage by Interventional Radiology (IR). <h3>Case</h3> Case 1: 14 yo with small bladder and stress urinary incontinence presented with pelvic pain and was found to have a solitary uterus, 6 cm LVA, and a large HC on MRI. She declined vaginoplasty and opted for IR drainage. Ultrasound (US)-guided transabdominal percutaneous uterine access was obtained and tissue plasminogen activator (tPA) was infused through a drain to thin the HC fluid to allow complete aspiration. Norethindrone acetate (NAT) was initiated for menstrual suppression. Cases 2 and 3: 10 yo presented with abdominal pain and found to have a solitary uterus, 5.3 cm LVA, and a large HC on MRI. Menstrual suppression with NAT failed to control her pain; after counseling, she declined vaginoplasty and opted for IR drainage. US-guided percutaneous access was obtained, tPA infused to thin the HC, and pigtail drain placed to assist with further decompression. Cone beam CT verified the patient's anatomy and confirmed drain position. Drain was removed post-operative day 1. Symptomatic re-accumulation of HC occurred after 15 months of menstrual suppression and a repeat US-guided drainage was performed with complete decompression; GnRH agonist arm implant was placed for long-term menstrual suppression. Case 4: 15 yo with complex history including urogenital sinus, renal transplant, and urinary diversion was admitted to the hospital with pelvic pain. MRI suggested a dilated bicornuate uterus with HC and 6 cm LVA. She was counseled on management options, and elected IR drainage. US-guided, percutaneous drainage of the uterine cavity was performed with complete decompression of HC. Cone beam CT confirmed uterine anatomy after drainage. NAT was initiated for long-term menstrual suppression. Table 1 provides a detailed summary of each case. <h3>Comments</h3> We present a novel approach to management of symptomatic HC from LVA via image-guided percutaneous drainage of HC by IR. This simple outpatient procedure can successfully relieve symptoms and allow for menstrual suppression to serve as a temporizing measure until patients are mature enough to undergo definitive surgery for various obstructive uterovaginal anomalies.

Smaller bladder capacity and stronger bladder contractility in patients with ketamine cystitis are associated with elevated TRPV1 and TRPV4

Stronger contractility and smaller bladder capacity are common symptoms in ketamine cystitis (KC). This study investigates the association between expression levels of transient receptor potential cation channel subfamily V (TRPV) proteins and the clinical characteristics of KC. Bladder tissues were obtained from 24 patients with KC and four asymptomatic control subjects. Video urodynamic parameters were obtained before surgical procedures. The TRPV proteins were investigated by immunoblotting, immunofluorescence staining, and immunohistochemistry. The Pearson test was used to associate the expression levels of TRPV proteins with clinical characteristics of KC. The expression level of TRPV1 and TRPV4 was significantly higher in the severe KC bladders than in mild KC or control bladders. The TRPV1 proteins were localized in all urothelial cell layers, and TRPV4 was located in the basal cells and lamina propria. The expression of TRPV1 was negatively associated with maximal bladder capacity (r = − 0.66, P = 0.01). The expression of TRPV4 was positively associated with the velocity of detrusor pressure rise to the maximum flow rate (r = 0.53, P = 0.01). These observations suggest smaller bladder capacity and stronger contractility in KC are associated with an elevated expression of TRPV1 and TRPV4, respectively.

An interesting case of vesical fistula complicating urogenital tuberculosis

BackgroundThe genitourinary tract is one of the commonest regions that can be affected by extrapulmonary tuberculosis where the diagnosis can be quite difficult. A high index of suspicion and an awareness of the atypical clinical manifestations of urogenital tuberculosis (UGTB) are important, especially in patients from regions where tuberculosis continues to be a major public health problem.Case presentationHerein, we report a 33-year-old male who presented with a non-healing fistula at the site of suprapubic catheter following an emergency repair of traumatic bladder rupture. Further evaluation revealed a scarred, small capacity bladder with urinary fistulae along with a poorly functioning kidney which was suspicious of a tuberculous etiology. Urinary isolation of Mycobacterium tuberculosis and a positive bladder biopsy confirmed our suspicions that the findings were indeed part of the spectrum of UGTB. The patient was started on anti-tubercular chemotherapy and underwent a nephrectomy along with an ileal conduit and is doing well at 1-year follow-up.ConclusionTo conclude, urogenital tuberculosis always has to be kept in mind especially when dealing with patients with non-healing urinary fistula, especially in endemic countries. A high index of suspicion along with careful and methodical workup of patients with atypical complications following common surgeries can lead to identification of this morbid condition and thereby avoid mismanagement and progression to chronic kidney disease.

Peadiatric transvesicoscopic dismembered ureteric reimplantation for ectopic upper ureter in duplication anomalies

Ectopic upper pole ureters in duplex kidneys can be managed surgically by ipsilateral distal ureteroureterostomy or reimplantation of both ipsilateral ureters when upper pole shows reasonable function. This study aimed to evaluate the clinical outcomes of transvesicoscopic dismembered upper ureteric reimplantation for patients with ectopic upper pole ureters in duplication anomalies. Between July 2015 and January 2019, laparoscopic transvesicoscopic ureteral reimplantation was performed in 20 patients with ectopic upper pole ureters. An incision was made in the bladder wall at 1.0cm proximal to the lower ureteral orifice of affected side. The upper pole ureter was recognized, and the terminal portion of the upper ureter was ligated and cut. Then the proximal portion of the upper ureter was mobilized, a transverse submucosal tunnel was created and upper ureteric reimplantation was performed with 6/0 absorbable sutures. Patients were followed up with renal ultrasonography and voiding cystourethrogram for clinical outcomes and hydronephrosis trends. Median (range) age at surgery was 22.5 (10-53) months. All of the 20 operations were successful, and none required conversion to an extravesical approach or open surgery. Four patients presented with worsening upper pole hydroureteronephrosis but recovered three to six months postoperatively. Resolution of symptoms and improving hydroureteronephrosis were achieved in all patients and VUR of the upper and lower ureters was not detected at postoperative follow-up. To our knowledge, dismembered reimplantation of upper pole ureters has been reported only in a small series through extravesical technique. In our study, we performed intravesicoscopic upper ureter Cohen reimplantation for duplex system ureteral ectopia. Compared with the extravesical approach, the transvesicoscopic approach leave most of the pelvic structures intact and the creation of a submucosal tunnel for prevention of ureteral reflux is more reliable; in addition, this approach avoids any manipulation of the lower pole ureter compared to ipsilateral ureteroureterostomy. But this method does not seem applicable to children under 6 months of age because of the small bladder capacity. The laparoscopic intravesical technique of dismembered ureteral reimplantation was safe and feasible in our cases and may be an alternative surgical treatment for ectopic upper pole ureters in duplication anomalies.

The reasons and countermeasures of Bladder Rupture caused by Transurethral Clot Evacuation.

Objective:Bladder rupture caused by transurethral clot evacuation is rare in clinic, but an emergency operation is indeed needed in the patient with bladder rupture. We analyzed the reasons of bladder rupture caused by transurethral clot evacuation and provided the countermeasures to guide clinical surgeon to prevent the iatrogenic damage of bladder.Method:We retrospectively reviewed the records of 287 patients in our hospital, who had bladder tamponade resulting from clots of blood for various reasons and underwent transurethral clot evacuation from January 2007 to January 2019. Six male cases, aged from 28 to 76 years (mean 56.67±17.76) had bladder rupture. Four patients whose bladder ruptured intraperitoneally were changed to open surgery to repair bladder and clear the remanent blood clots. Two patients with extraperitoneal bladder rupture and a small bladder crevasse underwent a conservative therapy.Results:We observed that the incidence rate of bladder rupture was not associated with bladder tamponade and the age, but may be associated with gender, bladder paracentesis preoperative and urinary retention preoperative. All six cases were male.. They had different period of urinary retention before operation. No supra-pubis bladder paracentesis was made before operation. The bladder crevasses located in the triangle zone and posterior wall of bladder entirely, and the length of the bladder crevasses ranged from 3 to 7cm (mean 4.83cm). The bladder crevasses were all lengthways, and four cases were of’ bladders ruptured intraperitoneally while another two presented an extraperitoneal bladder rupture.Conclusions:The reasons of bladder rupture caused by transurethral clot evacuation may be related to gender, bladder paracentesis preoperative and urinary retention preoperative. We should decide to use expectant treatment or open surgery immediately according to the extent of the rupture when bladder rupture occurs.

A prospective study comparing side-firing KTP laser enucleation vs bipolar transurethral resection of bladder tumor for small bladder tumors in an outpatient setting.

IntroductionLaser therapy provides an alternative option for treating non-muscle-invasive bladder cancer. The clinical evidence for potassium-titanyl-phosphate (KTP) laser en bloc resection is still limited. Here, we evaluated the efficacy, safety profile, and outcomes of side-firing KTP laser enucleation with bipolar transurethral resection of bladder tumor (TURBT) in carefully selected patients with small bladder tumors in an office setting.Material and methodsA total of 83 patients with small bladder tumors were treated with either side-firing KTP laser enucleation (Group A; n = 40) or bipolar TURBT (Group B; n = 43). Intraoperative and postoperative parameters of interest were recorded and analyzed as per the study so as to evaluate the efficacy, safety profile, and outcome of KTP laser enucleation.ResultsThe mean enucleation time was 23 ±5.24 min in Group A and the mean operative time was 21.98 ±4.77 min in Group B (p = 0.207). Group A had a lower risk of obturator reflex (0 vs 8; p = 0.005) and lesser amount of irrigation used intraoperatively as compared to Group B (6.2 ±0.61 L vs 7.65 ±0.75 L; p <0.0001). There were no perioperative complications. The recurrence rate at 6 months was none in Group A and 2.3% in Group B.ConclusionsThe present study shows that, in patients with small bladder tumors (<3 cm), KTP laser enucleation is an effective and feasible alternative to bipolar TURBT in an office setting and can be carried out safely with comparable treatment outcomes, lesser use of irrigation fluid and lower risk of obturator reflex. However, further studies in larger cohorts are warranted.

Prevalence of nocturia after brain injury: a cross-sectional study in a single rehabilitation center

ABSTRACT Aim: to analyze the prevalence of nocturia and its possible neuro-urological correlations in patients with a history of acquired brain injury (ABI). Methods: a single-centre population-based prospective study involving outpatients who were previously admitted to our Rehabilitation Hospital for acute ABI ≥ 18 months and ≤2 years prior. Impact of nocturia on QoL was evaluated by the standardized International Consultation on Incotinence Nocturia Quality of Life (ICIQ N-QoL). All participants were given a three-day frequency chart. Probability value <0.05 was statistically significant. Results: 48/138 subjects (35%) showed nocturia at 2-year follow-up visit. No, significant differences in age, gender, duration of coma, state of consciousness, disability, cognitive impairment and stroke severity were found in patients with or without nocturia. Subarachnoid haemorrhage (ESA) was the main reason for ABI in subjects showing nocturia (p = .037). The overall ICIQ N-QOL score ranged from 12 to 50 (mean 30.12 ± 8.87). Of them, 75% showed a total score >26. Increased diurnal frequency and small bladder capacity was statistically significantly associated with nocturia (p < .05). Conclusions: the rate of nocturia 2 years following ABI was lower compared to other neurological populations, although it was significantly associated with other storage urinary symptoms.

Urodynamics in Posterior Urethral Valve: Pursuit of prognostication or optimisation

Detrusor dysfunction is known to persist in several patients of Posterior Urethral Valve (PUV) after successful fulguration leading to progressive deterioration of renal function. Persistent bladder outlet obstruction (BOO) in the form of bladder neck hypertrophy, residual valves or strictures may contribute to progressive detrusor dysfunction. These are assessed radiologically or cystoscopically and are managed variedly by anticholinergics, alpha-adrenergic blockers or even bladder neck incision. Unfortunately, currently we do not have any objective measures to evaluate the degree of BOO in children or follow treatment outcome of any such measures. To assess the feasibility of pressure flow studies in children and proposition of an age independent index to quantify outflow parameters. We retrospectively studied the urodynamic data of the follow up cases of PUV who had been referred to us for urodynamic evaluation. Free flow uroflowmetries and filling and voiding cystometrogram were performed as per recommended protocol. Parameters like Adjusted Bladder Capacity (ABC = Voided volume+post void residue; expressed as percentage of expected bladder capacity {EBC}), overactivity, compliance, Qmax and P det at Qmax were taken into consideration. Indices like Bladder Outlet Obstruction Index (BOOI) and Bladder Contractility Index (BCI) were calculated. Multivariate analysis was run to assess correlation of ABC with other parameters. Receiver Operating Characteristics (ROC) curve analysis was performed to assess predictive values of BOOI for ABC. We did not find the ABC to change with age as has been classically described. Qmax and BCI were found to correlate with age. Values obtained for P det at Qmax and BOOI were not dependent on age and were in similar range as observed in adults. On multivariate analysis, small bladder was found to positively correlate with presence of overactivity, high BOOI and low BCI. ROC curve analysis showed a BOOI >29 could predict ABC to be <100% EBC with moderate sensitivity and specificity. Pressure flow studies are the only objective means of quantifying outlet resistance, hitherto they have been considered to be unrepresentative in children. Documentation and correction of high outflow pressures may arrest the cycle of detrusor hypertrophy and dysfunction. Quality pressure flow studies are feasible in children. Values of P det at Qmax and BOOI in children are age independent and similar to those observed in adults. BOOI can be potentially used in children to assess degree of BOO.