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ureteral stenosis

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https://www.readbyqxmd.com/read/29324912/diuresis-renography-and-ultrasonography-in-children-with-antenatally-detected-hydronephrosis-can-support-diagnoses-and-suggest-related-surgery-treatment
#1
M Radulović, S Beatović, M Janković, Dragana Šobić-Šaranović, Vera Artiko, Boris Ajdinović
OBJECTIVE: Prenatal ultrasound (US) screening detects the hydronephrosis (HN)-dilatation of fetal renal collecting system in 1%-5% of all pregnancies. In most children, HN is detected by prenatal US screening between 18-20 gestational week. Pelvi- ureteric junction (PUJ) stenosis is the most common etiological factor of prenatal HN and requires postnatal follow-up. Diuresis renography plays important role in the follow-up by complementing morphological information obtained by US with the data about differential renal function (DRF) and drainage...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29284898/complications-after-ileal-urinary-derivations
#2
Alden Prcic, Edin Begic
Introduction: The aim of the study was to determine the most frequent early and late complications in different types of ileal urinary diversions. Patients and methods: The study was conducted in a five-year period, on 106 patients who were diagnosed with invasive urinary bladder cancer and who had indication for radical cystectomy with one of the investigated types of urine derivation. They were divided into 2 groups, based on the type of ileal urinary diversions...
October 2017: Medical Archives
https://www.readbyqxmd.com/read/29243772/treating-ureteric-obstruction-secondary-to-gynecological-disease-assisted-with-retrograde-ureteroscopic-stenting
#3
J-C Chen, S-X Zhu, L-G Ren, J Chen, W Zhang
OBJECTIVE: To analyze the technical experience and clinical efficacy of ureteroscopic treatment of middle and lower ureteral obstruction due to gynecological disease. PATIENTS AND METHODS: From January 2007 to December 2015, 58 cases of ureteral obstruction were collected in 55 patients caused by gynecological factors. 19 cases had the history of gynecological iatrogenic injury and 39 cases were secondary to gynecological tumors. Different situations of luminal stenosis included obliteration, suture penetration, transection and unrecognized ureteral orifice...
December 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29222825/outcome-of-sonography-based-minimally-invasive-surgery-for-deep-infiltrating-endometriosis-of-the-ureter-and-urinary-bladder-a-retrospective-cohort-study
#4
Gernot Hudelist, Ayman Tammaa, Kristine Aas-Eng, Lisa Kirchner, Nadja Fritzer, Zoltan Nemeth, Michael Lamche
INTRODUCTION: To evaluate the accuracy of transvaginal sonography for preoperative detection of bladder endometriosis and surgical outcomes regarding fertility and pain symptoms of women with urinary tract endometriosis. MATERIAL AND METHODS: Retrospective cohort study of consecutive patients with urinary tract endometriosis undergoing laparoscopic partial cystectomy and/or ureterolysis/decompression, ureteric resection and end-to-end anastomosis or ureteroneocystostomy for ureteral stenosis and hydronephrosis...
December 8, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29216731/preclinical-testing-of-a-combination-stone-basket-and-ureteral-balloon-to-extract-ureteral-stones
#5
Rustin Massoudi, Thomas J Metzner, Buzz Bonneau, Tin Chan Ngo, Rajesh Shinghal, John T Leppert
We have developed the Peralta Stone Extraction System to increase the safety of ureteral stone extraction. The device combines a nitinol stone basket and low-pressure balloon into a single device. After visualization, the stone is captured in the tipless nitinol basket and enveloped by a low-pressure balloon. We tested the performance of device prototypes in a porcine model using stone mimics with diameters ranging from 4.2 to 6.2mm. Stones extracted with the device required less force when compared with stones in a standard ureteral stone basket...
December 7, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/29198686/orthotopic-kidney-transplantation-in-an-elderly-patient-with-various-severe-comorbid-conditions-a-case-report
#6
H Sasaki, R Nakazawa, T Iwata, W Usuba, H Yoshie, E Fujimoto, H Metoki, Y Katsuoka, K Aida, H Kudo, K Koitabashi, M Yazawa, Y Shibagaki, Y Marui, T Chikaraishi
In recent years, the frequency of high-risk kidney transplantations has increased. We report a case in which a 72-year-old man with various severe comorbidities (prostate cancer, diabetes mellitus, complete atrioventricular block, coronary artery stenosis, severe stenosis of the popliteal arteries, and severe calcification of the iliac arteries) who received an orthotopic kidney transplantation. To prevent the occurrence of acute limb ischemia due to the steal phenomenon (caused by the kidney graft), we decided that a heterotopic kidney transplantation involving the iliac arteries was not an appropriate option...
December 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29184915/laparoscopic-ureteral-reimplantation-in-endometriosis-a-severe-case
#7
Garri Tchartchian, Paul G Fabricius, Bernd Bojahr, Rudy L De Wilde
In aggressive cases, endometriosis can perturb the urogenital tract, in particular the ureter, which can potentially result in ureteral compression or stenosis. Even though this is rare, consequences are dramatic, such as hydronephrosis or organ failure. The present standard intervention comprises the resection of affected tissues and endometriosis foci combined with adjuvant hormonal therapy. When the ureter does not recover, ureteral reimplantation is required. The present case describes the successful laparoscopic approach of the reimplantation of the ureter with simultaneous cystoscopy...
October 2017: Surgery Journal
https://www.readbyqxmd.com/read/29142977/von-br%C3%A3-nn-nests-hyperplasia-as-a-cause-of%C3%A2-ureteral-stenosis-after-kidney-transplantation
#8
Mouad Hamzaoui, Arnaud Francois, Guillaume Defortescu, Isabelle Etienne, Charlotte Laurent, Dominique Bertrand, Dominique Guerrot
No abstract text is available yet for this article.
May 2017: KI Reports
https://www.readbyqxmd.com/read/29114110/the-diagnosis-of-obstructive-hydronephrosis-with-color-doppler-ultrasound
#9
Petrit Nuraj, Nexhmi Hyseni
Background: The obstructive hydronephrosis is a term that implicates the structural and functional changes of the kidneys as a result of difficulties in the flow of urine. Hydronephrosis specifically describes dilation and swelling of the kidney. Hydronephrosis is a condition that typically occurs when the kidney swells due to the failure of normal drainage of urine from the kidney to the bladder. Our aim was to evaluate the degree of hydronephrosis, causes and diagnostic method. Material and...
September 2017: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/29105596/ureteral-reconstruction-in-goats-using-tissue-engineered-templates-and-subcutaneous-pre-implantation
#10
Paul K J D de Jonge, Marije Sloff, Heinz Peter Janke, Luuk R M Versteegden, Barbara B Kortmann, Robert P E de Gier, Paul J Geutjes, Egbert Oosterwijk, Wout Feitz
INTRODUCTION: Repair of long ureteral defects often requires long graft tissues and extensive surgery. This is associated with complications including a lack of suitable tissue and graft site morbidity. Tissue engineering may provide an attractive alternative to the autologous graft tissues. In this study, ureteral repair using (pre-implanted) tubular collagen-Vicryl templates was evaluated in a new goat model. MATERIALS AND METHODS: Tubular templates were prepared from tubularized Vicryl meshes and 0...
November 4, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29058592/ureteral-reconstruction-using-a-tapered-non-vascularized-bladder-graft-an-experimental-study-in-a-canine-animal-model
#11
Lujia Zou, Shanhua Mao, Shenghua Liu, Limin Zhang, Tian Yang, Yun Hu, Qiang Ding, Haowen Jiang
BACKGROUND: Reconstruction of ureteral defects and strictures remains problematic for urologists. We aimed to investigate the possibility of a tapered non-vascularized bladder graft as a novel substitute for ureteral reconstruction. METHODS: This experimental study was conducted on nine beagles. Under general anesthesia, a full-thickness graft with 5-6 cm in length was disassociated from the anterior upper wall of the bladder, and tapered into 1/3 to 1/2 thickness, remaining the urothelial surface...
October 23, 2017: BMC Urology
https://www.readbyqxmd.com/read/29042705/ureterolithotripsy-for-a-ureteral-calculus-at-the-ureteroureterostomy-of-a-renal-transplant-recipient
#12
Yosuke Mitsui, Koichiro Wada, Motoo Araki, Takashi Yoshioka, Yuichi Ariyoshi, Shingo Nishimura, Yasuyuki Kobayashi, Katsumi Sasaki, Toyohiko Watanabe, Yasutomo Nasu
We describe a 40-year-old living-donor renal-transplant recipient who underwent successful ureterolithotripsy. He had been on hemodialysis for >15 years pre-transplant and underwent ureteroureterostomy along with the surgery. One year post-transplant, ultrasound examination demonstrated hydronephrosis, and CT showed a 6-mm ureteral calculus at the ureteroureterostomy site. No pain and no elevated serum creatinine were present. As the ureter was easily accessed, we performed a ureterolithotripsy, which would confirm whether a suture caused the calculus...
October 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/29039894/ureteral-orifice-involvement-by-urothelial-carcinoma-long-term-oncologic-and-functional-outcomes
#13
Muammer Altok, Ali F Sahin, Mehmet I Gokce, Gokhan R Ekin, Rauf Taner Divrik
PURPOSE: Bladder cancer (BC) may involve the ureteral orifice, and the resection of the orifice has oncological and functional consequences such as development of upper tract urothelial carcinoma (UTUC), vesicoureteral reflux or ureteral stenosis. The aim of this study was to investigate the oncological and functional outcomes of the ureteral orifice resection in BC patients and determine the predictive factors for UTUC development. MATERIALS AND METHODS: A total of 1359 patients diagnosed with BC, between 1992 and 2012, were reviewed retrospectively...
October 17, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29033814/a-case-of-aplasia-cutis-congenita-type-vi-bart-syndrome
#14
Yasmin Alfayez, Sahar Alsharif, Adel Santli
Aplasia cutis congenita type VI, also known as Bart syndrome, is a rare genetic mechanobullous disorder characterized by congenital localized absence of skin, mucocutaneous blistering lesions, and nail abnormalities. We present the case of a 4-h-old male newborn who presented with complete absence of skin over the anteromedial aspect of both lower legs associated with nail dystrophy since birth. After a few days, he developed blisters that were consistent with epidermolysis bullosa in histopathological examination...
May 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28989161/-pet-ct-imaging-features-of-primary-ureteric-lymphoma-%C3%A2-a-case-report-and-literature-review
#15
Xiaohuang Yang, Na Hu, Yunhua Wang
To review the dual-time-point 18F-fluorodeoxyglucose (FDG) positron emission tomography/X-ray computed tomography (PET-CT) imaging for a patient with primary ureteric lymphoma (PUL), and explore the potential of FDG PET-CT on diagnosis, staging and evaluation of treatment in patients with PUL.
 Methods: Complete clinical and imaging data of one patient with PUL was reported. The relevant literatures from 1997 to 2016 were reviewed, and the imaging features of uriteric lymphoma were analyzed.
 Results: The patient presented with microhematuria, a soft-density mass with moderate enhancement in the mid left ureter, and a luminal stenosis with the scope inserted 5 cm into the left stoma, but no mass was found...
September 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28977111/is-a-safety-guidewire-needed-for-retrograde-ureteroscopy
#16
Wilson Rica Molina, Rodrigo R Pessoa, Rodrigo Donalísio da Silva, Diedra Gustafson, Leticia Nogueira, Alex Meller
INTRODUCTION: It is generally advised to have a safety guidewire (SGW) present during ureteroscopy (URS) to manage possible complications. However, it increases the strenght needed to insert and retract the endoscope during the procedure, and, currently, there is a lack of solid data supporting the need for SGW in all procedures. We reviewed the literature about SGW utilization during URS. METHOD: A review of the literature was conducted through April 2017 using PubMed, Ovid, and The Cochrane Library databases to identify relevant studies...
August 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28969763/peri-and-postsurgical-evaluations-of-renal-transplant
#17
REVIEW
Belkis Erbas
Renal transplantation is the best treatment of choice for patient with chronic renal insufficiency because it provides better quality of life and longer survival. Survival rates for grafts and patients have improved over the recent decades because of significant evolution of surgical techniques and immunosuppressive treatment. However, renal transplantation is still associated with several complications, which may result in poor outcome. Cause of allograft dysfunction, which occurs in the early or late post-transplantation period, should be recognized immediately, so that it can be managed correctly...
November 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28969530/successful-second-unrelated-donor-hematopoietic-stem-cell-transplant-in-a-patient-with-dyskeratosis-congenital-after-first-graft-rejection
#18
Stefano Giardino, Maura Faraci, Edoardo Lanino, Giuseppe Morreale, Paola Terranova, Elena Palmisani, Carlo Dufour, Maurizio Miano
Dyskeratosis congenita is a rare congenital telomeropathy characterized by cutaneous and nail dystrophy, oral leukoplakia, and bone marrow failure. Pulmonary fibrosis and cancers are late manifestations. Allogeneic hematopoietic stem cell transplant represents the only cure for those with bone marrow failure with this disease, but outcomes reported are overall poor, with organ toxicities, graft failure, and graft-versus-host disease as main issues. Although reduced intensity conditioning regimens seem to be related to better outcomes, a standard regimen for dyskeratosis congenita has never been defined...
September 30, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28943567/a-rare-case-of-ureteral-carcinoma-with-recurrence-in-the-duodenum-requiring-double-stenting
#19
Hiroyuki Matsubayashi, Hirotoshi Ishiwatari, Masaki Tanaka, Tomohiro Iwai, Toru Matsui, Shinya Fujie, Naomi Kakushima, Sayo Ito, Ryo Yamashita, Masato Abe, Keiko Sasaki, Hiroyuki Ono
A 61-year-old man who had undergone total nephrouretectomy eight months earlier for right ureteral carcinoma was referred for the investigation of elevated serum hepatobiliary enzymes. Computed tomography revealed a small mass invading the lower bile duct. Duodenoscopy revealed a central ulcerative tumor near the major papilla, and a biopsy histologically confirmed metastatic ureteral carcinoma. Endoscopic biliary stenting ameliorated the cholangitis, and gemcitabine-based chemotherapy was initiated. The patient was stable for a year until a duodenal stenosis developed and required duodenal stenting...
September 25, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28878594/outcomes-of-ureteral-stent-placement-for-hydronephrosis-in-patients-with-gynecological-malignancies
#20
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
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