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neonatal hydronephrosis

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https://www.readbyqxmd.com/read/28927720/neuronal-defects-an-etiological-factor-in-congenital-pelviureteric-junction-obstruction
#1
Guo Yuan How, Kenneth Tou En Chang, Anette Sundfor Jacobsen, Te-Lu Yap, Caroline Choo Phaik Ong, Yee Low, John Carson Allen, Chik Hong Kuick, Malcolm Zhun Leong Lim, Narasimhan Kannan Laksmi
INTRODUCTION: Congenital pelviureteric junction obstruction (PUJO) is one of the most frequent causes of neonatal hydronephrosis. Obstruction at the PUJ has potential severe adverse outcomes, such as renal damage. While pyeloplasty has been established as the definitive treatment, the exact pathophysiology of congenital PUJO remains unknown. Recent research has proposed neuronal innervation defects as an etiological factor in congenital PUJO. We aim to study the expression of various neuronal markers in PUJO specimens compared with controls, and evaluate whether severity of renal disease or dysfunction pre-operatively is related to expression of neuronal markers in resected PUJO specimens...
September 1, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28916231/-malrotated-kidney-causing-prenatal-giant-hydronephrosis
#2
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
#3
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/28747615/isolated-congenital-megacystis-with-spontaneous-resolution-a-case-report
#4
Toshihiko Nakamura
The patient was a male infant with an antenatal diagnosis of huge intraabdominal mass. Prenatal ultrasound at 35 weeks gestation revealed a markedly enlarged cystic mass in the lower abdomen. After birth at 38 weeks, the infant was allowed to void spontaneously and passed meconium. Ultrasonography showed an enlarged bladder with wall thickness of 2.9 mm and no hydronephrosis. Voiding cystourethrograms showed no evidence of vesicoureteral reflex and posterior urethral valve. The post-void residuals were 15 mL at 11 days of life, 5 mL at 1 month and 0 mL at 5 months...
August 9, 2017: Fukushima Journal of Medical Science
https://www.readbyqxmd.com/read/28707775/giant-fetal-hydrometrocolpos-associated-with-cloacal-anomaly-causing-postnatal-respiratory-distress
#5
Tatsuhito Kanda, Takashi Iizuka, Rena Yamazaki, Junpei Iwadare, Masanori Ono, Hiroshi Fujiwara
Persistent cloaca is a rare presentation wherein the urethra, vagina, and rectum converge into a common channel with a single perineal opening. Fetal hydrometrocolpos can result if fluid accumulates behind an obstruction of this common channel. A 29-year-old woman (G4P1021) was referred at 36 2/7 weeks of gestation for evaluation of a fetal abdominal cystic mass. Detailed ultrasonography and magnetic resonance imaging showed two symmetric cystic masses, bilateral hydronephrosis, and oligohydramnios. Elective cesarean delivery was performed at 37 0/7 weeks; the baby weighed 4043 g with Apgar scores of 5 and 6 at 1 and 5 min...
July 14, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28667041/placental-fetal-thrombotic-vasculopathy-occurring-in-association-with-megacystis-microcolon-intestinal-hypoperistalsis-syndrome-a-case-report
#6
Anneliese Vélez-Pérez, Pamela Younes, Nina Tatevian
Megacystis-microcolon-intestinal hypoperistalsis syndrome (MMIHS) is a rare disease of functional obstruction affecting the bladder and intestines, characterized by a markedly distended bladder, microcolon, and decreased or absent intestinal peristalsis. Afflicted neonates have very poor prognosis, usually with fatal outcomes in first days to months of life. Placental fetal thrombotic vasculopathy (FTV) is a thrombo-occlusive disorder of the chorionic plate and fetal circulation. Herein, we describe an undocumented association of MMIHS and placental FTV...
May 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28286898/the-molecular-biology-of-pelvi-ureteric-junction-obstruction
#7
REVIEW
Laura Jackson, Mark Woodward, Richard J Coward
Over recent years routine ultrasound scanning has identified increasing numbers of neonates as having hydronephrosis and pelvi-ureteric junction obstruction (PUJO). This patient group presents a diagnostic and management challenge for paediatric nephrologists and urologists. In this review we consider the known molecular mechanisms underpinning PUJO and review the potential of utilising this information to develop novel therapeutics and diagnostic biomarkers to improve the care of children with this disorder...
March 13, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/27926352/3d-laparoscopy-in-neonates-and-infants
#8
Yury Kozlov, Konstantin Kovalkov, Vladimir Nowogilov
BACKGROUND: This study focuses on the successful application of three-dimensional (3D) laparoscopic surgeries in the treatment of congenital anomalies and acquired diseases in the young pediatric population. The purpose of this scientific work consists in highlighting the spectrum, indications, applicability, and effectiveness of 3D endosurgery in children. METHODS: Our experience is based on 110 endosurgical procedures performed in neonates and infants in the 3D format between January 2014 and May 2015...
December 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/27919407/incidence-of-urinary-tract-infections-in-infants-with-antenatally-diagnosed-hydronephrosis-a-retrospective-single-center-study
#9
Sofia Visuri, Timo Jahnukainen, Seppo Taskinen
OBJECTIVE: To evaluate the incidence of urinary tract infections (UTIs) in infants with antenatal hydronephrosis (AHN). MATERIALS AND METHODS: A cohort of AHN patients admitted to our institution between 2003 and 2013 were identified. Altogether 192 patients with nonrefluxing hydronephrosis (HN, n=135), nonrefluxing hydroureteronephrosis (HUN, n=21), or vesicoureteral reflux (VUR, n=36) were identified. Patients with complex anomalies or neonatal decompression of the urinary tract were excluded...
September 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27914124/atypical-neonatal-marfan-syndrome-with-p-glu1073lys-mutation-of-fbn1-the-first-case-in-korea
#10
Ju Sun Heo, Joo Young Song, Eun Young Choi, Eun Hee Kim, Ji Hee Kim, So Eun Park, Ji Hyun Jeon
Neonatal Marfan syndrome (nMFS) is considered to be on the most severe end of the spectrum of type I fibrillinopathies. The common features of nMFS include ascending aortic dilatation, severe mitral and/or tricuspid valve insufficiency, ectopia lentis, arachnodactyly, joint contractures, crumpled ear, loose skin, and pulmonary emphysema.We describe a newborn male diagnosed with nMFS. He presented several atypical features, such as diaphragmatic eventration, severe hydronephrosis with hydroureter, and dilated cisterna magna...
January 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27765515/rapid-percutaneous-nephrostomy-catheter-placement-in-neonates-with-the-trocar-technique
#11
O Ozbek, H E Kaya, A Nayman, T B Saritas, I Guler, O Koc, H Karakus
PURPOSE: The purpose of this study was to assess the efficacy of a modified percutaneous nephrostomy procedure for grade III-IV hydronephrosis in neonates. MATERIAL AND METHODS: Eleven neonates (five girls, six boys) with a mean age of 13.7days±9.9 (SD) (range, 4-28days) with pronounced hydronephrosis had percutaneous nephrostomy using a modified procedure. In all patients, percutaneous nephrostomy was performed with a trocar catheter under ultrasound guidance and then the catheter was placed into the collecting system without prior dilatation...
October 17, 2016: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/27742721/bilateral-hydroureters-and-hydronephrosis-in-a-neonate
#12
Fatma Rabah, Dana Al-Nabhani
No abstract text is available yet for this article.
October 14, 2016: Archives of Disease in Childhood. Education and Practice Edition
https://www.readbyqxmd.com/read/27486275/types-and-outcome-of-fetal-urinary-anomalies-in-low-resource-setting-countries-a-retrospective-study
#13
Hend Shalaby, Reda Hemida, Hanan Nabil, Mohammad Ibrahim
BACKGROUND: Congenital anomalies of the kidney and urinary tract in the developing countries have a poor prognosis due to limited experience in antenatal and postnatal management. PATIENTS AND METHODS: A 3-year retrospective study was carried out from January 2011 to December 2013. The following data were collected and analyzed: maternal age, gravidity, parity, gestational age at diagnosis, and ultrasonography findings. Final diagnosis after birth, the performed surgeries, follow-up data, as well as survival at one year were also analyzed...
October 2016: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/27440775/polyuria-associated-hydronephrosis-induced-by-xenobiotic-chemical-exposure-in-mice
#14
Wataru Yoshioka, Tatsuya Kawaguchi, Noriko Nishimura, Toshiya Akagi, Nozomi Fujisawa, Hiroyuki Yanagisawa, Fumio Matsumura, Chiharu Tohyama
Hydronephrosis is a commonly found disease state characterized by the dilation of renal calices and pelvis, resulting in the loss of kidney function in the severest cases. A generally accepted etiology of hydronephrosis involves the obstruction of urine flow along the urinary tract. In the recent years, we have developed a mouse model of hydronephrosis induced by lactational exposure to dioxin and demonstrated a lack of anatomical obstruction in this model. We also showed that prostaglandin E2 synthesis system plays a critical role in the onset of hydronephrosis...
October 1, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27344603/posterior-urethra-anterior-urethra-ratio-in-the-evaluation-of-success-following-puv-ablation
#15
R Babu, S Hariharasudhan, C Ramesh
INTRODUCTION: There are conflicting reports on the criteria with which to determine success following posterior urethral valve (PUV) ablation. The aims of this study were to assess the value of the posterior urethra: anterior urethra ratio (PAR) in predicting successful PUV ablation. MATERIALS AND METHODS: All neonates and infants with confirmed PUV on voiding cystourethrogram (VCUG) were included. Initial PAR was computed by dividing maximum posterior urethral diameter by anterior urethral diameter...
December 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27307966/postnatal-evaluation-and-outcome-of-prenatal-hydronephrosis
#16
Simin Sadeghi-Bojd, Abdol-Mohammad Kajbafzadeh, Alireza Ansari-Moghadam, Somaye Rashidi
BACKGROUND: Prenatal hydronephrosis (PNH) is dilation in urinary collecting system and is the most frequent neonatal urinary tract abnormality with an incidence of 1% to 5% of all pregnancies. PNH is defined as anteroposterior diameter (APD) of renal pelvis ≥ 4 mm at gestational age (GA) of < 33 weeks and APD ≥ 7 mm at GA of ≥ 33 weeks to 2 months after birth. All patients need to be evaluated after birth by postnatal renal ultrasonography (US). In the vast majority of cases, watchful waiting is the only thing to do; others need medical or surgical therapy...
April 2016: Iranian Journal of Pediatrics
https://www.readbyqxmd.com/read/27156562/ultrasonography-of-hydronephrosis-in-the-newborn-a-practical-review
#17
REVIEW
Young Hun Choi, Jung-Eun Cheon, Woo Sun Kim, In-One Kim
Widespread use of fetal ultrasonography is accompanied by more frequent detection of antenatal hydronephrosis. Therefore, sonographic evaluation of neonates with a history of antenatal hydronephrosis is becoming more widespread. As an initial postnatal non-invasive imaging modality, ultrasonography is used to screen for persistence of hydronephrosis, determine the level and severity of obstruction, and contribute to appropriate diagnosis and treatment. This review aims to provide a practical overview of the sonographic evaluation of neonatal hydronephrosis and to describe the sonographic findings of conditions associated with hydronephrosis in the newborn...
July 2016: Ultrasonography
https://www.readbyqxmd.com/read/27080556/laparoscopic-repair-of-bladder-rupture-in-a-neonate
#18
Satoshi Oki, Mikihiro Inoue, Kohei Otake, Kohei Matsushita, Yuhki Koike, Keiichi Uchida, Masato Kusunoki
Bladder rupture in a fetus is a rare occurrence. We report the first neonatal case of laparoscopic repair for prenatally diagnosed bladder rupture. A male neonate, who had presented with megacystis, bilateral hydronephrosis and hydroureters since 27 weeks-of-gestation, was delivered by emergency cesarean section because of sudden collapse of the bladder with massive ascites at 37 weeks-of-gestation. The diagnosis of bladder rupture was made by retrograde urethrocystography. Laparoscopic repair was carried out subsequent to urethral catheterization...
June 2016: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/26994452/signs-and-symptoms-of-developmental-abnormalities-of-the-genitourinary-tract
#19
REVIEW
Paulo Cesar Koch Nogueira, Isabel de Pádua Paz
OBJECTIVE: The abnormalities of the genitourinary tract development are the leading cause of chronic kidney disease (CKD) in children. The diagnosis of this disease in Brazil is late and incomplete, which results in increased morbidity and mortality in this age group. Early diagnosis of this condition is the prerogative of generalist pediatricians, and the aim of this study was to review the clinical signs and symptoms associated with developmental abnormalities of the genitourinary tract...
May 2016: Jornal de Pediatria
https://www.readbyqxmd.com/read/26807623/evaluation-and-management-of-hydronephrosis-in-the-neonate
#20
REVIEW
Eduardo A Oliveira, Maria Christina L Oliveira, Robert H Mak
PURPOSE OF REVIEW: The prenatal detection of congenital anomalies of the kidney and urinary tract (CAKUT) has permitted the early management of these conditions. The aim of this review is to provide an overview of the management of neonates with antenatal hydronephrosis (ANH). RECENT FINDINGS: In spite of the continuous advances in the understanding of the genetic basis, clinical course, and outcomes of CAKUT, there are still many controversies regarding the clinical significance, postnatal evaluation, and management of neonates with ANH...
April 2016: Current Opinion in Pediatrics
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