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Kidney anatomy

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https://www.readbyqxmd.com/read/28632265/3d-printed-conformal-microfluidics-for-isolation-and-profiling-of-biomarkers-from-whole-organs
#1
Manjot Singh, Yuxin Tong, Kelly Webster, Ellen Cesewski, Alexander P Haring, Sahil Laheri, Bill Carswell, Timothy J O'Brien, Charles H Aardema, Ryan S Senger, John L Robertson, Blake N Johnson
The ability to interface microfluidic devices with native complex biological architectures, such as whole organs, has the potential to shift the paradigm for the study and analysis of biological tissue. Here, we show 3D printing can be used to fabricate bio-inspired conformal microfluidic devices that directly interface with the surface of whole organs. Structured-light scanning techniques enabled the 3D topographical matching of microfluidic device geometry to porcine kidney anatomy. Our studies show molecular species are spontaneously transferred from the organ cortex to the conformal microfluidic device in the presence of fluid flow through the organ-conforming microchannel...
June 20, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28592391/long-term-fate-of-the-upper-tracts-following-complete-primary-repair-of-bladder-exstrophy
#2
Jonathan S Ellison, Jennifer Ahn, Margarett Shnorhavorian, Richard Grady, Paul A Merguerian
INTRODUCTION: Complete primary repair of bladder exstrophy (CPRE) is widely used for classic bladder exstrophy (CBE) closure. Long-term renal function with or without dilation in these patients is poorly characterized and may be impacted by bladder storage parameters or recurrent urinary tract infections (UTIs). OBJECTIVE: We sought to assess our long-term experience with CPRE and investigate factors that may influence upper-tract deterioration. STUDY DESIGN: A retrospective review of patients at our institution with CBE undergoing CPRE from 1990 to 2015 was performed...
May 17, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28559176/results-from-multiple-prospective-single-center-clinical-trials-of-the-off-the-shelf-p-branch-fenestrated-stent-graft
#3
Mark A Farber, Matthew J Eagleton, Tara M Mastracci, James F McKinsey, Raghuveer Vallabhaneni, Björn Sonesson, Nuno Dias, Timothy Resch
OBJECTIVE: The purpose of this study was to report prospective data of an off-the-shelf fenestrated endograft (Zenith p-Branch; Cook Medical, Bloomington, Ind) from four centers for the treatment of patients with pararenal abdominal aortic aneurysms. METHODS: Data were combined from four single-center investigational studies conducted in the United States and Europe. The p-Branch endograft consists of a proximal off-the-shelf component incorporating a scallop for the celiac artery, a superior mesenteric artery fenestration, and two conical pivot fenestrations to preserve flow to the renal vessels...
May 27, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28557332/impact-of-contrast-exposure-from-computed-tomography-angiography-on-acute-kidney-injury-after-neonatal-cardiopulmonary-bypass-surgery
#4
Waldemar F Carlo, Steven T Clark, Santiago Borasino, Jeffrey A Alten
OBJECTIVE: Acute kidney injury (AKI) is a frequent complication after cardiopulmonary bypass (CBP) for cardiac surgery in neonates. It is unclear if exposure to computed tomography angiography (CTA) in the preoperative period increases the risk of AKI. We hypothesized a short interval between CTA and CPB surgery would be associated with higher rates of AKI in infants. DESIGN: In this single center retrospective review of patients between 2012 and 2015, neonates less than one month old were analyzed if they had CTA prior to cardiac surgery with CPB...
May 30, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28544435/solid-renal-masses-in-transplanted-allograft-kidneys-a-closer-look-at-the-epidemiology-and-management
#5
John J Griffith, Katherine A Amin, Nikhil Waingankar, Susan M Lerner, Veronica Delaney, Scott A Ames, Ketan Badani, Michael A Palese, Reza Mehrazin
The objective of this review is to explore the available literature on solid renal masses (SRM) in transplant allograft kidneys to better understand the epidemiology and management of these tumors. A literature review using PubMed was performed according to the PRISMA methodology. Fifty-six relevant studies were identified from 1988-2015. A total of 174 SRMs in 163 patients, were identified with a mean tumor size of 2.75 cm (0.5-9.0cm). Tumor histology was available in 164 (94.3%) tumors: clear cell renal cell carcinoma (RCC) (45...
May 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28540840/living-donor-kidney-transplant-in-a-patient-with-type-b-mayer-rokitansky-k%C3%A3-ster-hauser-syndrome-reconstructed-vagina-and-abnormal-pelvic-vessels-a-case-report
#6
Mariarosaria Campise, Mariano Ferraresso, Evaldo Favi, Claudio Beretta, Caterina Colico, Piergiorgio Messa
Mayer-Rokitansky-Küster-Hauser syndrome is a rare disorder consisting of vaginal aplasia and other müllerian duct abnormalities. Urinary tract malfor-mations possibly leading to renal failure are also common. For these patients, kidney transplant remains the best option. However, aberrant anatomy and scarring from previous operations may actually preclude successful implantation of the graft. In this setting, careful pretransplant evaluation with high-resolution imaging studies and multidisciplinary planning are mandatory...
May 22, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28532911/lateral-transpsoas-approach-to-the-lumbar-spine-and-relationship-of-the-ureter-anatomical-study-with-application-to-minimizing-complications
#7
Vlad Voin, Christina Kirkpatrick, Fernando Alonso, Tarush Rastugi, Filipe H Sanders, Doniel Drazin, Rod J Oskouian, R Shane Tubbs
INTRODUCTION: Complications from lateral lumbar interbody fusion procedures range from neurological deficits to organs and blood vessel to injuries. Injury to the ureter has been reported though uncommon. The present study was performed to elucidate the anatomical relationship of the ureter to this surgical approach. METHODS: Eight adult cadavers (16 sides) were placed in the full lateral position and the distal ureter cannulated with a metal wire, which was passed up to the kidney...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28520334/kidney-anatomy-three-dimensional-3d-printed-pelvicalyceal-system-models-of-the-collector-system-improve-the-diagnosis-and-treatment-of-stone-disease
#8
EDITORIAL
Luciano A Favorito
No abstract text is available yet for this article.
May 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28500739/feasibility-and-safety-of-transfemoral-sheathless-portico-aortic-valve-implantation-preliminary-results-in-a-single-center-experience
#9
Maurizio Taramasso, Andrea Denegri, Shingo Kuwata, Hans Rickli, Philipp K Haager, Gabor Sütsch, Hector Rodriguez Cetina Biefer, Jan Kottwitz, Fabian Nietlispach, Francesco Maisano
BACKGROUND: Feasibility of transfemoral (TF) transcathteter aortic valve replacement (TAVR) is limited by the smallest diameter, the calcification and tortuosity of the iliofemoral access vessels. The use of the Portico system without delivery sheath results in significantly lower profile delivery system compared to standard technique. We herein report our single center experience, feasibility and safety of such an approach. METHODS: The Portico valve was implanted sheathless in 81 high-risk patients with severe aortic stenosis utilizing percutaneous femoral access...
May 13, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28479470/third-versus-second-generation-stent-graft-for-endovascular-aneurysm-repair-a%C3%A2-device-specific-analysis
#10
Marco Bergonti, Giovanni Teruzzi, Giulia Santagostino, Luca Grancini, Cristina Ferrari, Daniela Trabattoni, Alessandro Lualdi, Antonio Bartorelli
PURPOSE: Our purpose is to analyze the outcomes of endovascular aneurysm repair (EVAR) in patients treated with Excluder endograft (W.L. Gore and Associate, Flagstaff, AZ), comparing second generation, featuring SIM-PULL delivery system (ExSP) and third generation, featuring C3 (ExC3), concerning intraprocedural data and long-term outcomes. METHODS: In our single-center, comparative study, we retrospectively analyzed all patients undergoing elective EVAR with Excluder from May 2008 to December 2015...
May 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28469310/a-single-left-renal-vein-draining-into-the-common-iliac-vein
#11
Awad Bakhit Kaabneh, Sizeph Edward Haddad, Feras Ahmad Hammouri, Abdalla Yosef Omari, Mohammad K Abdadayem
Several variations of the anatomy of the left renal vein have been reported. Rare variants are frequently overlooked in the preoperative assessment but can lead to complications during surgery. We describe a kidney donor with a rare anomaly of a single main left renal vein draining into the left common iliac vein.
April 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28466969/microscopic-anatomy-of-the-visceral-fasciae
#12
Carla Stecco, Maria Martina Sfriso, Andrea Porzionato, Anna Rambaldo, Giovanna Albertin, Veronica Macchi, Raffaele De Caro
The term 'visceral fascia' is a general term used to describe the fascia lying immediately beneath the mesothelium of the serosa, together with that immediately surrounding the viscera, but there are many types of visceral fasciae. The aim of this paper was to identify the features they have in common and their specialisations. The visceral fascia of the abdomen (corresponding to the connective tissue lying immediately beneath the mesothelium of the parietal peritoneum), thorax (corresponding to the connective tissue lying immediately beneath the mesothelium of the parietal pleura), lung (corresponding to the connective tissue under the mesothelium of the visceral pleura), liver (corresponding to the connective tissue under the mesothelium of the visceral peritoneum), kidney (corresponding to the Gerota fascia), the oesophagus (corresponding to its adventitia) and heart (corresponding to the fibrous layer of the pericardial sac) from eight fresh cadavers were sampled and analysed with histological and immunohistochemical stains to evaluate collagen and elastic components and innervation...
May 3, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28456638/-polycystic-kidney-disease-an-analysis-of-e-patients-exchanges-in-the-public-blogosphere
#13
Corinne Lagrafeuil, Mélanie Hueber, Xavier Magnien, Thierry Baroghel, Laurent Lecardeur, Thierry Marquet
The goal this study was to understand the preoccupations of e-patients with Autosomal Dominant Polycystic Kidney Disease (ADPKD), through their discussions on social networks, and to compare them with those of members of a specialized association. We collected and analyzed all messages containing an unequivocal expression of the pathology (polycystic kidney disease, PKD, ADPKD, etc.) available on public forums on the French Internet and all french-language messages posted on the forum of the patient group Association Polykystose-France (PKD-France) during 2 years...
April 26, 2017: Néphrologie & Thérapeutique
https://www.readbyqxmd.com/read/28431859/mri-based-quantification-of-renal-perfusion-in-mice-improving-sensitivity-and-stability-in-fair-asl
#14
Fabian Tobias Gutjahr, Stephan Michael Günster, Thomas Kampf, Patrick Winter, Volker Herold, Wolfgang Rudolf Bauer, Peter Michael Jakob
PURPOSE: The importance of the orientation of the selective inversion slice in relation to the anatomy in flow-sensitive alternating inversion recovery arterial spin labeling (FAIR ASL) kidney perfusion measurements is demonstrated by comparing the standard FAIR scheme to a scheme with an improved slice selective control experiment. METHODS: A FAIR ASL method is used. The selective inversion preparation slice is set perpendicular to the measurement slice to decrease the unintended labeling of arterial spins in the control experiment...
April 18, 2017: Zeitschrift Für Medizinische Physik
https://www.readbyqxmd.com/read/28394085/dual-echo-epi-sequence-for-integrated-distortion-correction-in-3d-time-resolved-hyperpolarized-13-c-mri
#15
Benjamin J Geraghty, Justin Y C Lau, Albert P Chen, Charles H Cunningham
PURPOSE: To provide built-in off-resonance correction in time-resolved, volumetric hyperpolarized (13) C metabolic imaging by implementing a novel dual-echo 3D echo-planar imaging (EPI) sequence and reconstruction. METHODS: A spectral-spatial pulse for single-resonance excitation followed by a dual-echo 3D EPI readout was implemented to provide 64 × 8 × 6 cm(3) coverage at 5 × 5 × 5 mm(3) nominal resolution. Multiple sources of EPI distortions were encoded using a multi-echo (1) H EPI reference scan...
April 10, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28377138/daily-ct-guidance-improves-target-coverage-during-definitive-radiation-therapy-for-gastric-malt-lymphoma
#16
He Wang, Sarah A Milgrom, Bouthaina S Dabaja, Grace L Smith, Mary Martel, Chelsea C Pinnix
PURPOSE: Radiation therapy (RT) for gastric mucosa-associated lymphoid tissue (MALT) lymphoma is challenging because of variation in the stomach's position, size, and shape. We investigated the interfractional changes in stomach location, consequent dosimetric effects, and impact of daily computed tomography image guidance RT (CT-IGRT). METHODS AND MATERIALS: Twelve patients treated for gastric MALT lymphoma with intensity modulated radiation therapy, using a breath-hold technique and restriction of oral intake, were studied retrospectively...
March 6, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28374154/procedural-reassessment-of-radiofrequency-renal-denervation-in-resistant-hypertensive-patients
#17
Franco Rabbia, Elisa Testa, Chiara Fulcheri, Elena Berra, Silvia Di Monaco, Michele Covella, Marco Pappaccogli, Silvia Monticone, Renato Rosiello, Denis Rossato, Franco Veglio
INTRODUCTION: Recent anatomical and clinical studies have led to the hypothesis that in several cases of failure of response to renal denervation (RDN), the procedure has not been technically correct. AIM: To perform procedural reassessment in patients with true resistant hypertension who underwent RDN. METHODS: We retrospectively reassessed the procedural technique of RDN in 10 true resistant hypertensive patients, comparing the sites of renal ablations with the knowledge of animal and human post mortem evidences...
April 3, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28359409/surgical-management-of-urinary-stones-with-abnormal-kidney-anatomy
#18
Giray Ergin, Mustafa Kirac, Ali Unsal, Burak Kopru, Mustafa Yordam, Hasan Biri
In spite of the fact that urologic surgical techniques used by urologists are becoming more and more minimally invasive and easier because of developing technologies, surgical approaches for the urinary stones in kidneys with abnormal anatomy are still confusing. The objective of this article is to determine the treatment options in these kidneys. For this purpose, between 2005 and 2015, we retrospectively evaluated patients operated for urolithiasis with various congenital renal anomalies in five referral urology clinics in our country...
April 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28345835/evolution-of-the-histo-epidemiological-profile-of-urological-cancers-in-togo
#19
Tchin Darré, Koué Folligan, Tchilabalo Matchonna Kpatcha, Kokou Kanassoua, Edoe Sewa, Sassil Daré, Kodjo Tengue, Koffi Amégbor, Gado Napo Koura
Background: Urological cancers are an important public health issue and pose problems with diagnosis and adequate management in developing countries. Our aim was to determine and report epidemiological and histological features of urological cancers in Togo. Materials and methods: A retrospective descriptive study was conducted of cases of urological cancers observed in the laboratory of pathological anatomy of the CHU Tokoin over the last 4 years (2012-2016). The parameters studied were frequency, age, sex, sites of development and histological type...
February 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28343953/development-and-validation-of-a-novel-and-cost-effective-animal-tissue-model-for-training-transurethral-resection-of-the-prostate
#20
Sichuan Hou, Gillian Ross, Iain Tait, Paul Halliday, Benjie Tang
OBJECTIVES: To develop and validate a new and cost-effective animal tissue training model for practicing resection skills of transurethral resection of the prostate (TURP). METHODS AND MATERIALS: A porcine kidney was prepared and restructured to simulate the relevant anatomy of the human prostate. The restructured prostate was connected to an artificial urethra and bladder. Face, content, and construct validity of the model was carried out using a 5-point Likert scale questionnaire, and comparison in task performance between participants and experts was made using observational clinical human reliability analysis...
March 23, 2017: Journal of Surgical Education
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