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Kidney ultrasonography

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https://www.readbyqxmd.com/read/28106614/study-of-intrapatient-variability-and-reproducibility-of-quantitative-tumor-perfusion-parameters-evaluated-with-dynamic-contrast-enhanced-ultrasonography
#1
Nathalie Lassau, Bénédicte Coiffier, Laura Faivre, Baya Benatsou, Sophie Bidault, Elizabeth Girard, Bernard Asselain, Stéphanie Pitre-Champagnat, Serge Koscielny
OBJECTIVES: Dynamic contrast-enhanced (DCE) ultrasonography (US) is a functional imaging technique enabling quantitative assessment of solid tumor perfusion in metastatic patients treated with antiangiogenic therapies.The objective of this prospective single-center study was to evaluate in real-life conditions (in routine clinical practice) the intrapatient variability and reproducibility of DCE-US parameters. MATERIALS AND METHODS: Each patient provided written informed consent and had 2 DCE-US examinations (preprandial and postprandial) at baseline, day 15, and 1 month after treatment initiation...
January 18, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28100159/interventional-therapy-for-transplant-renal-artery-stenosis-is-safe-and-effective-in-preserving-allograft-function-and-improving-hypertension
#2
Lili Wang, Bin Liu, Jieke Yan, Yongzheng Wang, Wujie Wang, Wei Wang, Haiyang Chang, Hongwei Wang, Changjun Wang, Zheng Li, Yuliang Li
PURPOSE: To evaluate the outcomes of percutaneous intervention (PI) for transplant renal artery stenosis (TRAS). MATERIALS AND METHODS: Doppler ultrasonography was used as the screening tool, and angiography was the diagnostic method for TRAS. The indications for PI were (1) a reduction in lumen diameter of >50% or (2) a mean pressure gradient of >15 mm Hg. Technical success was assessed immediately after the procedure. The short-term results of stenosis were evaluated by serum creatinine (Scr) levels and blood pressure (BP)...
January 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28070473/renal-infiltration-by-diffuse-large-b-cell-lymphoma-as-a-rare-cause-of-fanconi-s-syndrome-a-case-report
#3
Shoab Saadat, Syed Nayer Mahmud, Asim Qureshi
We report the case of a 16-year-old female patient with a known history of coeliac disease, who presented with the complaints of diarrhea, vomiting and generalized body weakness. On examination, she was found to have dehydration, decreased power in all her limbs, cervical lymphadenopathy and hepatosplenomegaly. Investigations showed severe hypokalemia, hyponatremia, hypomagnesemia, hypoglycemia and mildly enlarged kidneys on ultrasonography. Biopsy of the duodenum confirmed the flare up of coeliac disease, while cervical lymph node biopsy was positive for atypical lymphoid infiltrate and a morphology suggestive of non-Hodgkin's lymphoma...
November 30, 2016: Curēus
https://www.readbyqxmd.com/read/28018439/phelan-mcdermid-syndrome-presenting-with-developmental-delays-and-facial-dysmorphisms
#4
Yoon-Myung Kim, In-Hee Choi, Jun Suk Kim, Ja Hye Kim, Ja Hyang Cho, Beom Hee Lee, Gu-Hwan Kim, Jin-Ho Choi, Eul-Ju Seo, Han-Wook Yoo
Phelan-McDermid syndrome is a rare genetic disorder caused by the terminal or interstitial deletion of the chromosome 22q13.3. Patients with this syndrome usually have global developmental delay, hypotonia, and speech delays. Several putative genes such as the SHANK3, RAB, RABL2B, and IB2 are responsible for the neurological features. This study describes the clinical features and outcomes of Korean patients with Phelan-McDermid syndrome. Two patients showing global developmental delay, hypotonia, and speech delay were diagnosed with Phelan-McDermid syndrome via chromosome analysis, fluorescent in situ hybridization, and multiplex ligation-dependent probe amplification analysis...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28017526/contribution-of-fibroblast-growth-factor-23-to-framingham-risk-score-for-identifying-subclinical-atherosclerosis-in-chinese-men
#5
X Hu, X Ma, Y Luo, Y Xu, Q Xiong, X Pan, Y Bao, W Jia
BACKGROUND AND AIMS: Fibroblast growth factor 23 (FGF23) was demonstrated to be involved in the occurrence and development of cardiovascular disease (CVD). The goal of the present study was to investigate the relationship between serum FGF23 levels and carotid intima-media thickness (C-IMT) in men with a low-to-moderate CVD risk. METHODS AND RESULTS: Subjects with normal kidney function were selected from the Shanghai Obesity Study. Serum FGF23 levels were determined by sandwich enzyme-linked immunosorbent assay...
November 23, 2016: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28012707/effectiveness-of-ureteroscopy-among-the-youngest-patients-one-centre-s-experience-in-an-endemic-region-in-turkey
#6
Mehmet Mazhar Utanğaç, Mansur Dağgülli, Onur Dede, Ahmet Ali Sancaktutar, Yaşar Bozkurt
BACKGROUND: In recent years, the incidence of urinary stone disease reportedly has been increasing. The use of shockwave lithotripsy has seen low success rates, the inefficacy of a single session, and the need for general anaesthesia in children; additionally, children are exposed to radiation. These suboptimal treatment conditions have all led to ureteroscopy (URS) becoming the treatment method of choice for paediatric ureter stones. The aim of this study is to examine the effectiveness of 4...
November 19, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27995107/evaluating-the-effectiveness-of-adding-magnesium-chloride-to-conventional-protocol-of-citrate-alkali-therapy-on-kidney-stone-size
#7
Hassan Niroomand, Amin Ziaee, Keivan Ziaee, Alaleh Gheissari
BACKGROUND: Potassium citrate (K-Cit) is one of the therapeutic solutions broadly used in patients with urolithiasis. However, recent studies have shown that it is not so effective. Therefore, the goal of our study was to evaluate the effect of a combination of K-Cit - MgCl2 oral supplements, on urinary stone size. MATERIALS AND METHODS: This study was performed on 70 asymptomatic urolithiasis cases. The supplements included K-Cit and magnesium chloride (MgCl2), purchased from (Merck Company, Germany)...
2016: Advanced Biomedical Research
https://www.readbyqxmd.com/read/27982509/kidney-volume-and-ambulatory-blood-pressure-in-children
#8
Shari Gurusinghe, Arkadiy Palvanov, Mark E Bittman, Pamela Singer, Rachel Frank, Nataliya Chorny, Lulette Infante, Christine B Sethna
Low nephron number has been shown to be a risk factor for hypertension (HTN) in adulthood. Kidney volume may serve as a surrogate marker for nephron mass. The relationship between kidney volume and ambulatory blood pressure (BP) in the pediatric population is not known. A retrospective chart review of children younger than 21 years who were evaluated for HTN was performed. Twenty-four-hour BP and ultrasonography data were obtained. Multiple regression was used to examine associations between BP and kidney volume...
December 16, 2016: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/27979705/renal-function-and-carotid-atherosclerosis-in-adults-with-no-known-kidney-disease
#9
S Buscemi, G Geraci, F M Massenti, C Buscemi, F Costa, C D'Orio, G Rosafio, C Buscemi, V Maniaci, G Parrinello
BACKGROUND AND AIMS: A high prevalence of atherosclerotic lesions characterizes patients with chronic kidney disease, though there is little data on the relationship between kidney function and atherosclerotic changes in the healthy population or in people with no known renal impairment. The aim of our study was to analyze, in a comprehensive general population with no known kidney disease, the relationship between renal function and subclinical carotid atherosclerotic damage. METHODS AND RESULTS: A general real-life population of 611 participants (233 males and 378 females; age ≥18 years) with no known kidney failure was selected for the study...
September 28, 2016: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/27936958/kidney-resistive-index-relates-to-variations-of-home-blood-pressure-in-chronic-kidney-diseases
#10
Tsuneo Takenaka, Yoichi Ohno, Hiromichi Suzuki
BACKGROUND: Kidney resistive index (RI) correlates with tubulointerstitial changes and predicts renal prognosis. Most patients with chronic kidney diseases (CKDs) manifest high blood pressure and atherosclerotic cardiovascular diseases. In addition, various atherosclerotic indexes relate to variations in blood pressure. METHODS: Subjects were 70 CKD patients, who visited our office and agreed to measure home blood pressure and receive renal ultrasonography. Cross-sectional analyses were performed...
2016: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/27928810/the-association-of-stone-opacity-in-plain-radiography-with-percutaneous-nephrolithotomy-outcomes-and-complications
#11
Robab Maghsoudi, Masoud Etemadian, Amir Hossein Kashi, Alireza Ranjbaran
PURPOSE: To investigate the influence of stone opacity in plain radiography on stone free rate and complications ofpercutaneous nephrolithotomy (PCNL). MATERIALS AND METHODS: A number of 101 patients who underwent PCNL between July-September 2015 wereprospectively included. Stone opacity was judged on preoperative plain Kidney-Ureter-Bladder X-ray. Stone freerate was evaluated two weeks after the operation by ultrasonography and KUB. RESULTS: There were 61 patients with opaque stones and 40 patients with non-opaque stones...
8, 2016: Urology Journal
https://www.readbyqxmd.com/read/27924508/ultrasonography-guided-percutaneous-nephrolithotomy-with-chinese-one-shot-tract-dilation-technique-based-on-stimulated-diuresis-a-report-of-67-cases
#12
Ying Shi, Hua-Geng Liang, Xiong Yang, Bo Hai, Liang Wang, Yi-Fei Xing, Wen Ju, Fu-Qing Zeng, Xiao-Ping Zhang, Wen-Cheng Li
The safety and effectiveness of a novel Chinese one-shot dilation technique based on stimulated diuresis for percutaneous nephrolithotomy (PCNL) were investigated. After the feasibility of the Chinese one-shot dilation based on stimulated diuresis was verified by an animal study, this technique was applied in the clinical practice. A total of 67 patients in our department underwent the modified PCNL from July 2014 to June 2015. After the renal infundibulum was distended by stimulated diuresis, the kidney was punctured under the ultrasonographic guidance via the fornix of the target calyx...
December 2016: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/27915961/immediate-vascular-complications-after-kidney-transplant-experience-from-2100-recipients
#13
Mahmoud Tavakkoli, Reza Mahdavi Zafarghandi, Rahim Taghavi, Alireza Ghoreifi, Masoud Mahdavi Zafarghandi
OBJECTIVES: Vascular complications, especially immediate events during kidney transplant, are the major cause of graft loss, and prompt surgical intervention is important for salvage of the graft and recipient. In this study, our aim was to show our experiences with vascular interventions and their effects on graft outcomes in transplant patients with suspected immediate vascular events. MATERIALS AND METHODS: Over 24 years (from 1990 to 2014), 2100 renal transplant procedures (1562 living and 538 deceased donors) were performed by one fixed team...
December 2, 2016: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/27901178/hypoparathyroidism-and-pseudohypoparathyroidism-etiology-laboratory-features-and-complications
#14
Maicon Piana Lopes, Breno S Kliemann, Ileana Borsato Bini, Rodrigo Kulchetscki, Victor Borsani, Larissa Savi, Victoria Z C Borba, Carolina A Moreira
Objectives: To identify a clinical profile and laboratory findings of a cohort of hypoparathyroidism patients and determine the prevalence and predictors for renal abnormalities. Materials and methods: Data from medical records of five different visits were obtained, focusing on therapeutic doses of calcium and vitamin D, on laboratory tests and renal ultrasonography (USG). Results: Fifty-five patients were identified, 42 females and 13 males; mean age of 44...
November 2016: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27900216/predictors-of-renal-recovery-in-renal-failure-secondary-to-bilateral-obstructive-urolithiasis
#15
Muthukrishna P Rajadoss, Chandrasingh Jeyachandra Berry, Grace J Rebekah, Vinu Moses, Shyamkumar N Keshava, Kuruthukulangara S Jacob, Santosh Kumar, Nitin Kekre, Antony Devasia
OBJECTIVES: To identify factors predicting renal recovery in patients presenting with renal failure secondary to bilateral obstructing urolithiasis. PATIENTS AND METHODS: Data from electronic records of consecutive adult patients presenting with bilateral obstructing urolithiasis between January 2007 and April 2011 were retrieved. Ultrasonography of the abdomen, and kidney, ureter, bladder (KUB study) X-ray or abdominal non-contrast computed tomography confirmed the diagnosis...
December 2016: Arab Journal of Urology
https://www.readbyqxmd.com/read/27887768/evaluation-of-acute-kidney-injury-using-contrast-ultrasonography-in-a-rabbit-model-of-crush-syndrome
#16
Chundong Zhang, Xin Wang, Jie Tang
This study aimed to investigate the feasibility of evaluating acute kidney injury (AKI) using contrast ultrasonography in a rabbit model of crush syndrome. Sixty-four New Zealand white rabbits were anesthetized and the left hind limb was wrapped and compressed for 4 h with a sphygmomanometer. Contrast ultrasonography of the left kidney using microbubbles as the contrast medium was performed. The serum levels of blood urea nitrogen (BUN), creatine (Cr), creatine kinase (CK) and lactate dehydrogenase (LDH) were significantly increased in comparison to before the compression...
February 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/27864568/value-of-dynamic-mri-using-the-ktrans-technique-for-assessment-of-native-kidneys-in-pre-emptive-renal-transplantation
#17
Recep Sade, Mecit Kantarci, Leyla Karaca, Aylin Okur, Hayri Ogul, Mustafa Keles, Erdem Çankaya, Arif Kursad Ayan
BACKGROUND: Different non-invasive imaging techniques such as Doppler ultrasonography and renal scintigraphy are commonly employed to assess allograft function and associated complications. However, all such methods lack sufficient specificity to discriminate between residual renal function of native kidneys. Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) evaluates signal dynamics during the passage of contrast material through the renal cortex, medulla, and collecting system...
November 18, 2016: Acta Radiologica
https://www.readbyqxmd.com/read/27862806/a-prospective-and-randomised-trial-comparing-fluoroscopic-total-ultrasonographic-and-combined-guidance-for-renal-access-in-mini-percutaneous-nephrolithotomy
#18
Wei Zhu, Jiasheng Li, Jian Yuan, Yongda Liu, Shaw P Wan, Guanzhao Liu, Wenzhong Chen, Wenqi Wu, Jintai Luo, Dongliang Zhong, Defeng Qi, Ming Lei, Wen Zhong, Ze Zhang, Zhaohui He, Zhijian Zhao, Suilin Lu, Yuji Wu, Guohua Zeng
OBJECTIVE: To compare the safety and efficacy of fluoroscopic guidance (FG), total ultrasonographic guidance (USG), and combined ultrasonographic and fluoroscopic guidance (CG) for percutaneous renal access in mini-percutaneous nephrolithotomy (mini-PCNL). PATIENTS AND METHODS: The present study was conducted between July 2014 and May 2015 as a prospective randomised trial at the First Affiliated Hospital of Guangzhou Medical University. In all, 450 consecutive patients with renal stones of >2 cm were randomised to undergo FG, USG, or CG mini-PCNL (150 patients for each group)...
November 8, 2016: BJU International
https://www.readbyqxmd.com/read/27861333/isolated-neurosarcoidosis-mimicking-multifocal-meningiomas-a-diagnosis-pitfall-a-case-report
#19
Kun Wang, Xiaoying He, Wei Wang, Huanjiang Niu, Yirong Wang, Xiujun Cai, Shuxu Yang
INTRODUCTION: Neurosarcoidosis accounts for approximately 5% of the sarcoidosis, which develops exclusively in the nervous system and is always difficult to diagnose. We describe a rare case of isolated neurosarcoidosis mimicking as multifocal meningiomas. A 27-year-old male was admitted to our hospital with a history of unconsciousness and convulsion 1 month ago, which was suspected as a seizure. The results showed no abnormalities in complete blood count; serum electrolytes; erythrocyte sedimentation rate and ultrasonography of the liver, pancreas, spleen, kidney and parotid gland, and so on...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27855691/semiautomatic-segmentation-of-the-kidney-in-magnetic-resonance-images-using-unimodal-thresholding
#20
Martin Sandmair, Matthias Hammon, Hannes Seuss, Ragnar Theis, Michael Uder, Rolf Janka
BACKGROUND: Total kidney volume (TKV) is an important marker for the presence or progression of chronic kidney disease, however, routine ultrasonography underestimates renal volume to a high and varying degree. OBJECTIVE: The aim of this work was to adapt and evaluate a semi-automatic unimodal thresholding method for volumetric analysis of the kidney in native T2-weighted magnetic resonance (MR) images. METHODS: In a group of healthy volunteers (n = 24; 48 kidneys), we defined a region of interest (ROI) by manually tracing the outline of the kidney in every MR image...
November 17, 2016: BMC Research Notes
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