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Hydronephrosis

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https://www.readbyqxmd.com/read/28920024/use-of-appendix-as-neoureter-a-ray-of-hope
#1
Parveen Kumar, Yogesh Kumar Sarin
A case of antenatally diagnosed hydronephrosis (later known to be PUJO complicated with urinoma and associated with hypoplasia of entire ureter) was treated using vermiform appendix as replacement.
July 2017: Journal of Neonatal Surgery
https://www.readbyqxmd.com/read/28918613/predicting-time-to-reflux-of-children-with-antenatal-hydronephrosis-a-competing-risks-approach
#2
Maryam Nazemipour, Abdol-Mohammad Kajbafzadeh, Kazem Mohammad, Abbas Rahimi Foroushani, Mahmood Mahmoudi
The aim of this study was describing methodological aspects and applying a trivariate Weibull survival model using the competing risks concept to predict time to occurrence different types of reflux (unilateral (left, right) or bilateral) in children with antenatal hydronephrosis. Data from 333 children in Pediatric Urology Research Center of Children's Hospital Medical Center, affiliated with Tehran University of Medical Sciences was used. The effect of some demographic and clinical factors on child's reflux was studied...
July 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28916231/-malrotated-kidney-causing-prenatal-giant-hydronephrosis
#3
R E Massicot, S Ferracci, A-P Uzel
We report the case of a malrotated right kidney associated with giant prenatal hydronephrosis due to a non vascular extrinsic ureteropelvic compression. The kidney presented an hyper-rotation of 180° in relation to the original fetal position, with the renal hilum backward looking. At neonatal surgery we discover that the inferior pole of the kidney pushes laterally the ureteropelvic junction like a violin bridge. The simple uncrossing of the ureteropelvic junction from the inferior renal pole relieves the extrinsic ureteral obstacle and the giant hydronephrosis...
September 12, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28910997/paediatric-nuclear-medicine-imaging
#4
Lorenzo Biassoni, Marina Easty
Background: Nuclear medicine imaging explores tissue viability and function by using radiotracers that are taken up at cellular level with different mechanism. This imaging technique can also be used to assess blood flow and transit through tubular organs. Nuclear medicine imaging has been used in paediatrics for decades and this field is continuously evolving. Sources of data: The data presented comes from clinical experience and some milestone papers on the subject...
September 1, 2017: British Medical Bulletin
https://www.readbyqxmd.com/read/28902181/platelet-derived-growth-factor-receptor-alpha-positive-cells-a-new-cell-type-in-the-human-ureteropelvic-junction
#5
Manuela Hunziker, Anne-Marie O'Donnell, Prem Puri
BACKGROUND: Ureteropelvic junction (UPJ) obstruction is the most common cause of congenital hydronephrosis. Normal ureteral motility requires coordinated interaction between neurons, smooth muscle cells (SMCs), and interstitial Cajal-like cells (IC-LCs). Recently, a new type of interstitial cell, platelet-derived growth factor receptor α-positive (PDGFRα(+)) cells, was discovered in the gastrointestinal tract and bladder.MethodsWe used immunohistochemistry to study PDGFRα protein distribution in normal human UPJ and congenital UPJ obstruction...
September 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28895477/prospective-comparative-study-of-the-efficacy-and-safety-of-new-generation-versus-first-generation-system-for-super-mini-percutaneous-nephrolithotomy-smp-a-revolutionary-approach-to-improve-endoscopic-vision-and-stone-removal
#6
Guohua Zeng, Wei Zhu, Yang Liu, Junhong Fan, Wayne Lam, Yu Lan, Chao Cai, Tuo Deng, Xiaohang Li, Zhijian Zhao
Purpose The study sought to compare the procedural and clinical results of SMP with the use of the first- and new- generation devices. Methods A prospective, comparative cohort study was carried out between February 2013 to January 2017. Patients who underwent either first or new-generation SMP were eligible for the study. Inclusion criteria were adult patients with renal stone <4 cm, or in pediatric patients with renal stone < 2.5cm with a history of failed SWL. The primary outcome of the present study was the operating time, which was calculated from the starting of percutaneous puncture to the wound closure...
September 12, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28894842/retroperitoneal-actinomycosis-a-rare-sequela-of-an-infected-obstructing-ureteral-stone
#7
Elizabeth Bearrick, Colby A Dixon, Joshua Rhein, Michael S Borofsky
Background: Actinomycosis is a condition in which Actinomyces, a normal component of the oral and gastrointenstial flora, becomes pathogenic in the setting of damaged tissue, leading to widespread tissue destruction across fascial planes. Prior literature describing this condition is rare, particularly cases involving the retroperitoneum. In this study, we report a case of retroperitoneal actinomycosis caused by an infected, obstructing ureteral stone. Case Presentation: A 48-year-old woman with a history of substance abuse, malnutrition, and gastric bypass presented to the emergency room with a 3-week history of abdominal pain and fevers...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28894411/bilateral-hydroureteronephrosis-with-a-hypertrophied-trabeculated-urinary-bladder
#8
Showkathali Iqbal, Iqbal Raiz, Iqbal Faiz
Bilateral hydroureteronephrosis involves the dilatation of the renal pelvis, calyces and ureter; it develops secondary to urinary tract obstruction and leads to a build-up of back pressure in the urinary tract, and it may lead to impairment of renal function and ultimately culminate in renal failure. Although clinically silent in most cases, it can be diagnosed as an incidental finding during evaluation of an unrelated cause. In a minority of patients, it presents with signs and symptoms. Renal calculus is the most common cause, but there are multiple non-calculus aetiologies, and they depend on age and sex...
March 2017: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/28884349/functional-and-morphological-recovery-of-solitary-kidneys-after-drainage-double-j-stent-placement-vs-emergency-ureteroscopy-which-one-is-reasonable
#9
Kemal Sarica, Fatih Tarhan, Kutluhan Erdem, Ahmet Halil Sevinc, Rasim Guzel, Bilal Eryildirim
The purpose of the study was to evaluate the functional and morphological recovery of solitary kidneys following the relief of obstruction by two different approaches. Data of 65 adult patients with acute renal failure in obstructed solitary kidney were evaluated. Depending on the type of emergent decompression procedure while 34 patients were treated with a double J stent placement only 31 patients underwent ureteroscopic lithotripsy with double J stent placement. Following these procedures, in addition to the amount of excreted urine during the first 24 h, changes in the serum creatinine levels and the degree of hydronephrosis were noted and evaluated during the first week of follow-up after intervention...
September 7, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28884348/extravesical-robotic-ureteral-reimplantation-for-ureterovaginal-fistula
#10
Brian J Linder, Igor Frank, John A Occhino
INTRODUCTION: We present a video describing the technical considerations for performing an extravesical robotic ureteral reimplantation. METHODS: A 55-year old woman presented with urinary incontinence secondary to a ureterovaginal fistula after robotic-assisted hysterectomy. After failure of more conservative measures, she proceeded to a robotic ureteral reimplantation. Following port placement, the ureter is identified at the level of the iliac vessels and dissected circumferentially...
September 7, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28882930/renal-scar-formation-and-kidney-function-following-antibiotic-treated-murine-pyelonephritis
#11
Patrick D Olson, Lisa K McLellan, Alice Liu, Kelleigh L Briden, Kristin M Tiemann, Allyssa L Daugherty, Keith A Hruska, David A Hunstad
We present a new preclinical model to study treatment, resolution, and sequelae of severe ascending pyelonephritis. Urinary tract infection (UTI), primarily caused by uropathogenic Escherichia coli (UPEC), is a common disease in children. Severe pyelonephritis is the primary cause of acquired renal scarring in childhood, which may eventually lead to hypertension and chronic kidney disease in a small but important fraction of patients. Preclinical modeling of UTI utilizes almost exclusively females, which (in most mouse strains) exhibit inherent resistance to severe ascending kidney infection; consequently, no existing preclinical model has assessed the consequences of recovery from pyelonephritis following antibiotic treatment...
September 7, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28878601/an-atypical-presentation-of-retroperitoneal-fibrosis
#12
Wei Phin Tan, Thomas Hwang, Robert Medairos, Dennis A Pessis
A 69-year-old man with a psoriatic arthritis treated with infliximab for 1 month presented to the urology clinic for lower urinary tract symptoms. He was found to have a new diagnosis of elevated creatinine. Computed tomography of the abdomen and pelvis revealed bilateral severe hydronephrosis with abnormal soft tissue thickening of the right renal pelvis and proximal ureter. Bilateral stents were placed after ureteroscopy demonstrated no abnormalities. A computed tomography-guided biopsy of the peri-ureteral lesions revealed fibroadipose tissue with sclerosis and extensive chronic inflammation consistent with retroperitoneal fibrosis...
August 2017: Current Urology
https://www.readbyqxmd.com/read/28878594/outcomes-of-ureteral-stent-placement-for-hydronephrosis-in-patients-with-gynecological-malignancies
#13
Saya Kurata, Shohei Tobu, Kazuma Udo, Mitsuru Noguchi
OBJECTIVE: We examined the outcomes of patients undergoing ureteral stent placement for hydronephrosis that occurred during treatment for gynecological malignancies. MATERIALS AND METHODS: From January 2004 to December 2009, we enrolled 33 patients with 45 ureters undergoing ureteral stent placement for hydronephrosis which occurred during treatment for gynecological malignancies. We examined the outcomes of the patients after stent placement. RESULTS: The causes of hydronephrosis were obstruction of the urinary tract by a tumor (n = 22), obstruction due to lymph node swelling (n = 6), ureteral stenosis after radiation therapy (n = 4), and others (n = 1)...
August 2017: Current Urology
https://www.readbyqxmd.com/read/28874180/ureter-metastatic-castration-resistant-prostate-cancer-a-case-report
#14
Sohgo Tsutsumi, Takashi Kawahara, Yusuke Hattori, Taku Mochizuki, Jun-Ichi Teranishi, Yasuhide Miyoshi, Sawako Chiba, Hiroji Uemura
BACKGROUND: In most cases, prostate cancer metastasizes to the lymph nodes, bone, and liver. In very rare cases, it metastasizes to the ureter. Due to the difficulty in making a preoperative diagnosis, ureteral metastasis from prostate cancer is typically diagnosed after nephroureterectomy. CASE PRESENTATION: A 77-year-old Asian Japanese man with right hydronephrosis and hydroureter was referred to our hospital to undergo further examination due to the suspicion of ureteral cancer...
September 6, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28869171/-physiological-hydronephrosis-in-pregnancy-occurrence-and-possible-causes-an-mri-study
#15
J Grosjean, M Cannie, J-M de Meyer
INTRODUCTION: The etiology of the uretero-hydronephrosis in pregnancy is just hypothesis: hormonal or mechanical hypothesis, only investigated by echographic studies. MRI permits to visualize the entirety of the urinary tract, which can be helpful to find out a mechanical cause. METHODOLOGY: We have analysed the MRI of 100 asymptomatic pregnant women. We have determined the number and locations of the uretero-hydronephroses and researched whether there is any relationship between the uretero-hydronephrosis and certain abdominal structures...
August 28, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28868510/retroperitoneal-fibrosis-clinical-presentation-and-outcome-analysis-from-urological-perspective
#16
Kunal Kishor Jadhav, Vikash Kumar, Chirag B Punatar, Vinod S Joshi, Sharad N Sagade
PURPOSE: To study clinical presentation, laboratory results, imaging findings and treatment options and outcomes of retroperitoneal fibrosis (RPF). To determine whether it follows the same natural course and response to treatment in the Asian population as in the Western world. MATERIALS AND METHODS: Medical records of patients diagnosed with RPF on imaging and histopathology between February 2010 and April 2016 were reviewed. RESULTS: Of the 21 patients analyzed, mean age at presentation was 50...
September 2017: Investigative and Clinical Urology
https://www.readbyqxmd.com/read/28868506/ultrasound-guided-percutaneous-nephrolithotomy-advantages-and-limitations
#17
Foo Cheong Ng, Wai Loon Yam, Tze Ying Benjamin Lim, Jin Kiat Teo, Kok Kit Ng, Sey Kiat Lim
PURPOSE: The use of ultrasound in percutaneous nephrolithotomy (PCNL) has not been shown to translate to better clinical and stone outcomes. To compare the operative outcomes, postoperative outcomes and complication rates of ultrasound-guided access PCNL (USGA-PCNL) versus fluoroscopy-guided access PCNL (FGA-PCNL). MATERIALS AND METHODS: A total of 184 consecutive patients who underwent PCNL from July 2008 to September 2014 were identified from our PCNL database...
September 2017: Investigative and Clinical Urology
https://www.readbyqxmd.com/read/28865484/renal-ultrasound-provides-low-utility-in-evaluating-cardiac-surgery-associated-acute-kidney-injury
#18
Allen Young, Todd Crawford, Alejandro Suarez Pierre, J Trent Magruder, Charles Fraser, John Conte, Glenn Whitman, Christopher Sciortino
BACKGROUND: Renal ultrasonography is part of the algorithm in assessing acute kidney injury (AKI). The purpose of this study was to assess the clinical utility of renal US in postoperative cardiac patients who develop AKI. METHODS: We conducted a retrospective study of 90 postoperative cardiac surgery patients at a single institution from 1/19/2010 to 3/19/2016 who underwent renal US for AKI. We reviewed provider documentation to determine whether renal US changed management...
September 2, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28861312/effective-predictors-for-surgical-decision-in-antenatal-hydronephrosis-a-prospective-multiparameter-analysis
#19
İsa Kıllı, Dinçer Avlan, Hakan Taşkınlar, Pınar Pelin Kara, Feramuz Demir Apaydın, Ali Delibaş, Ali Nayci
OBJECTIVE: The majority of antenatal hydronephrosis disappears spontaneously. In our study, we have investigated the effective predictors for surgical decision in antenatal hydronephrosis. MATERIAL AND METHODS: Forty-four patients found to have renal pelvic anteroposterior (AP) diameter more than 10-mm on antenatal ultrasonograpy were followed after birth. The study groups were divided into two groups: follow-up and surgery group. On follow-up, longitudinal diameter of the kidney, parenchymal thickness of the kidney, AP diameter of renal pelvis, AP diameter of middle calyces on ultrasonograpy, and differential renal function, 20th minute clearance, half-life of radionuclide tracer (T1/2), Tmax, Tmax-T1/2, normalised residual activity (NORA) on diuretic renography were evaluated...
September 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28861311/our-experiences-with-robot-assisted-laparoscopic-surgery-in-pediatric-patients-the-first-case-series-from-turkey
#20
Yusuf Kibar, Serdar Yalçın, Engin Kaya, Burak Köprü, Turgay Ebiloğlu, Giray Ergin, Hüseyin Tomruk
OBJECTIVE: Robotic surgery is a leading treatment option for minimally invasive surgery and has an increasing popularity in pediatric population, as well. In this article, we reported our case series of robot-assisted laparoscopic surgery in pediatric population. MATERIAL AND METHODS: We retrospectively reviewed 29 consecutive pediatric patients who underwent robot- assisted procedures between May 2014 and October 2016. Patient demographics, hospitalization time, estimated blood loss, robotic time and total operative and peri-, and post-operative complications were evaluated...
September 2017: Turkish Journal of Urology
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