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Skolarikos A, Somani B, Neisius A, Jung H, Petřík A, Tailly T, Davis N, Tzelves L, Geraghty R, Lombardo R, Bezuidenhout C, Gambaro G. Metabolic Evaluation and Recurrence Prevention for Urinary Stone Patients: An EAU Guidelines Update. Eur Urol 2024; 86:343-363. [PMID: 39069389 DOI: 10.1016/j.eururo.2024.05.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/22/2024] [Accepted: 05/13/2024] [Indexed: 07/30/2024]
Abstract
BACKGROUND AND OBJECTIVE The aim of this review was to define patients who are at high risk of recurrence of urolithiasis, to delineate diagnostic and therapeutic algorithms for each type of stone, and to clarify general guidelines and recommendations for prevention of recurrence. METHODS A professional research librarian carried out literature searches for all sections of the urolithiasis guidelines, covering the timeframe between 1976 and June 2023. KEY FINDINGS AND LIMITATIONS For every patient with urolithiasis, an attempt should be made to analyse the stone. Patients should be given general instructions on how to prevent recurrence, including adequate fluid and calcium intake, and low consumption of sodium and protein. Identifying and correcting the causative factors is a cornerstone in preventing the recurrence of urolithiasis. Diagnostic and therapeutic algorithms by stone composition are available. Every patient should undergo baseline metabolic screening, while patients with calcium stones, who are at high risk of relapse and complications, should undergo extensive metabolic screening with two 24-h urine collections and should receive targeted therapy. Patients with uric acid, infection, or cystine stones are at high risk of relapse. All patients at high risk of recurrence should be closely monitored, especially those not complying with therapy in the long term. CONCLUSIONS AND CLINICAL IMPLICATIONS Metabolic stone evaluation and patient follow-up are highly recommended to prevent urolithiasis recurrence.
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Affiliation(s)
- Andreas Skolarikos
- National and Kapodistrian University of Athens, 2nd Department of Urology, Sismanogleio Hospital, Athens, Greece.
| | - Bhaskar Somani
- Department of Urology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Andreas Neisius
- Department of Urology, Hospital of the Brothers of Mercy Trier, Medical Campus University Mainz, Trier, Germany
| | - Helene Jung
- Urinvejskirurgisk Afdeling, Sygehus Lillebælt, Vejle, Denmark
| | - Alec Petřík
- Department of Urology, Region Hospital, Ceske Budejovice, Czechia
| | - Thomas Tailly
- Servicio de Urología, Hospital Universitario de Gante, Gante, Belgium
| | - Niall Davis
- Department of Urology, Connolly Hospital, Dublin, Ireland
| | - Lazaros Tzelves
- National and Kapodistrian University of Athens, 2nd Department of Urology, Sismanogleio Hospital, Athens, Greece
| | - Rob Geraghty
- Department of Urology, Freeman Hospital, Newcastle-upon-Tyne, UK
| | | | - Carla Bezuidenhout
- European Association of Urology Guidelines Office, Arnhem, The Netherlands
| | - Giovanni Gambaro
- Division of Nephrology and Dialysis, Department of Medicine, University of Verona, Verona, Italy
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2
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Güven S, Tokas T, Tozsin A, Haid B, Lendvay TS, Silay S, Mohan VC, Cansino JR, Saulat S, Straub M, Tur AB, Akgül B, Samotyjek J, Lusuardi L, Ferretti S, Cavdar OF, Ortner G, Sultan S, Choong S, Micali S, Saltirov I, Sezer A, Netsch C, de Lorenzis E, Cakir OO, Zeng G, Gozen AS, Bianchi G, Jurkiewicz B, Knoll T, Rassweiler J, Ahmed K, Sarica K. Consensus statement addressing controversies and guidelines on pediatric urolithiasis. World J Urol 2024; 42:473. [PMID: 39110242 PMCID: PMC11306500 DOI: 10.1007/s00345-024-05161-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Accepted: 07/05/2024] [Indexed: 08/10/2024] Open
Abstract
PURPOSE We aimed to investigate controversial pediatric urolithiasis issues systematically, integrating expert consensus and comprehensive guidelines reviews. METHODS Two semi-structured online focus group meetings were conducted to discuss the study's need and content, review current literature, and prepare the initial survey. Data were collected through surveys and focus group discussions. Existing guidelines were reviewed, and a second survey was conducted using the Delphi method to validate findings and facilitate consensus. The primary outcome measures investigated controversial issues, integrating expert consensus and guideline reviews. RESULTS Experts from 15 countries participated, including 20 with 16+ years of experience, 2 with 11-15 years, and 4 with 6-10 years. The initial survey identified nine main themes, emphasizing the need for standardized diagnostic and treatment protocols and tailored treatments. Inter-rater reliability was high, with controversies in treatment approaches (score 4.6, 92% agreement), follow-up protocols (score 4.8, 100% agreement), and diagnostic criteria (score 4.6, 92% agreement). The second survey underscored the critical need for consensus on identification, diagnostic criteria (score 4.6, 92% agreement), and standardized follow-up protocols (score 4.8, 100% agreement). CONCLUSION The importance of personalized treatment in pediatric urolithiasis is clear. Prioritizing low-radiation diagnostic tools, effectively managing residual stone fragments, and standardized follow-up protocols are crucial for improving patient outcomes. Integrating new technologies while ensuring safety and reliability is also essential. Harmonizing guidelines across regions can provide consistent and effective management. Future efforts should focus on collaborative research, specialized training, and the integration of new technologies in treatment protocols.
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Affiliation(s)
- S Güven
- Department of Urology, Necmettin Erbakan University Meram School of Medicine, Konya, Turkey.
| | - T Tokas
- Department of Urology, University General Hospital of Heraklion, Athens, Greece
| | - A Tozsin
- Department of Urology, Trakya University School of Medicine Hospital, Edirne, Turkey
| | - B Haid
- Ordensklinikum Linz, Barmherzige Scwestern Hospital, Linz, Austria
| | - T S Lendvay
- Department of Urology, University of Washington, Seattle Children's Hospital, Seattle, WA, USA
| | - S Silay
- Istanbul Medipol University, Istanbul, Turkey
| | - V C Mohan
- Preeti Urology Hospital, Hyderabad, Telangana, India
| | - J R Cansino
- Hospital Universitario La Paz, Madrid, Spain
| | - S Saulat
- Department of Urology, Tabba Kidney Institute, Karachi, Pakistan
| | - M Straub
- Department of Urology, Technical University Munich, Munich, Germany
| | - A Bujons Tur
- Urology Department, Fundación Puigvert, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - B Akgül
- Department of Urology, Trakya University School of Medicine Hospital, Edirne, Turkey
| | - J Samotyjek
- Pediatric Surgery and Urology Clinic CMKP in Dziekanów Leśny, Dziekanów Leśny, Poland
| | - L Lusuardi
- Department of Urology, Paracelsus Medical University Salzburg University Hospital, Urology, Salzburg, Austria
| | - S Ferretti
- Department of Urology, University of Modena and Reggio Emilia, Modena, Italy
| | - O F Cavdar
- Department of Urology, Necmettin Erbakan University Meram School of Medicine, Konya, Turkey
| | - G Ortner
- Department of Urology, General Hospital Hall I.T, Tirol, Austria
| | - S Sultan
- Department of Urology, Menoufia University Hospitals, Shebeen El Kom, Egypt
| | - S Choong
- Institute of Urology, University College Hospital, London, UK
| | - S Micali
- Department of Urology, University of Modena and Reggio Emilia, Modena, Italy
| | - I Saltirov
- Department of Urology and Nephrology at Military Medical Academy, Sofia, Bulgaria
| | - A Sezer
- Pediatric Urology Clinic, Konya City Hospital, Konya, Turkey
| | - C Netsch
- Asklepios Klinik BarmbekAbteilung Für Urologie, Hamburg, Germany
| | - E de Lorenzis
- Department of Urology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - O O Cakir
- King's College London, Guy's and St. Thomas' NHS Foundation Trust, King's Health Partners, London, UK
| | - G Zeng
- Department of Urology and Guangdong Key Laboratory of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - A S Gozen
- Department of Urology, Medius Clinic, Ostfildern, Germany
| | - G Bianchi
- Department of Urology, University of Modena and Reggio Emilia, Modena, Italy
| | - B Jurkiewicz
- Pediatric Surgery and Urology Clinic CMKP in Dziekanów Leśny, Dziekanów Leśny, Poland
| | - T Knoll
- Klinikum Sindelfingen-Boeblingen, Sindelfingen, Germany
| | - J Rassweiler
- Department of Urology and Andrology, Danube Private University, Krems, Austria
| | - K Ahmed
- King's College London, Guy's and St. Thomas' NHS Foundation Trust, King's Health Partners, London, UK
- Sheikh Khalifa Medical City, Abu Dhabi, UAE
- Khalifa University, Abu Dhabi, UAE
| | - K Sarica
- Sancaktepe Sehit Prof. Dr. Ilhan Varank Research and Training Hospital, Istanbul, Turkey
- Department of Urology, Biruni University Medical School, Istanbul, Turkey
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Lumbreras J, Madariaga L, Rodrigo MD. Pediatric renal lithiasis in Spain: research, diagnostic and therapeutic challenges, and perspectives. Front Pediatr 2023; 11:1294319. [PMID: 38143536 PMCID: PMC10746353 DOI: 10.3389/fped.2023.1294319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/20/2023] [Indexed: 12/26/2023] Open
Abstract
Incidence and prevalence of urolithiasis is apparently increasing worldwide, also among children and adolescents. Nevertheless, robust data have only been obtained in a few countries. In Spain, a voluntary Registry for Pediatric Renal Lithiasis has been active since 2015. Irregular participation limits its applicability, as well as its limitation to patients with a stone available for morphocompositional study, to obtain data about incidence and prevalence. On the other hand, findings about typology of stones and clinical and analytical characteristics of these subjects have been communicated in several meetings. Other valuable efforts in this field are the elaboration of guidelines for the collection and processing of urine samples for the study of urolithiasis in pediatric patients with the consensus of the Spanish Society for Pediatric Nephrology (AENP) as well as the Spanish Society for Laboratory Medicine (SEQC), the collaborative network RenalTube for the diagnosis of primary tubulopathies and the registry of patients with Primary Hyperoxaluria (OxalSpain). In many hospitals from the public healthcare system, pediatric nephrologists are the specialists in charge of the management of children with kidney stones, but there is no formal regulation on this competence. Other specialists, such as urologists, pediatric surgeons or pediatric urologists, in many cases do not offer a complete insight into the etiopathogenic mechanisms and the consequent medical treatment. Access to medication according to standards of treatment is warranted, provided a correct diagnosis is achieved, but criteria for the reimbursement of certain therapies, such as RNAi drugs for primary hyperoxaluria, are arguable.
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Affiliation(s)
- Javier Lumbreras
- Pediatric Nephrology Unit, Department of Pediatrics, Son Espases University Hospital, Balearic Islands Health Research Institute (IdISBa), Palma de Mallorca, Spain
| | - Leire Madariaga
- Pediatric Nephrology Department, Cruces University Hospital, IIS Biocruces Bizkaia, University of the Basque Country, CIBERER/CIBERDEM/EndoERN, Barakaldo, Spain
| | - María Dolores Rodrigo
- Pediatric Nephrology Unit, Department of Pediatrics, Son Espases University Hospital, Balearic Islands Health Research Institute (IdISBa), Palma de Mallorca, Spain
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4
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Jiang H, Wang K, Zhang H, Yang B, Mao W, Chen M, Zhou S. Physical activity can influence the relationship between ethylene oxide and risk of kidney stones: A cross-sectional study from the NHANES 2013-2016. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:64673-64681. [PMID: 37071362 DOI: 10.1007/s11356-023-26994-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 04/07/2023] [Indexed: 05/11/2023]
Abstract
Ethylene oxide (EO) is known to cause inflammatory damage, and suitable physical activity can reportedly affect the risk of kidney stones. In this study, we aimed to investigate the relationship between EO and kidney stones and whether physical activity can potentially influence the relationship between EO and kidney stones. Overall, 3,336 adult participants were included; of them, 330 (9.9%) had a self-reported history of kidney stones. Data were obtained from the National Health and Nutrition Examination Survey 2013-2016. Physical activity was calculated using metabolic equivalent, weekly frequency, and duration. Logistic regression and restricted cubic spline (RCS) curves were used to explore the association between physical activity, EO, and kidney stones. Dose-response curves from the RCS showed a nonlinear positive association between EO and kidney stones. Multivariate logistic regression analysis revealed an adjusted odds ratio (aOR) of 1.548 (95% confidence interval 1.123-2.135, P = 0.008) for the risk of kidney stones among participants in the highest quartile (Q4) group compared with those in the lowest quartile (Q1) group. Furthermore, compared to the Q1 group, the aOR for risk of kidney stones in the Q4 group was 1.326 in participants without physical activity, a decreased risk (aOR 1.239) in participants with low physical activity, and an increased risk (aOR 1.981) in those with high physical activity. This study suggests that EO is a risk factor for kidney stones and that suitable physical activity may moderate this relationship to some extent; however, excessive physical activity can exacerbate this relationship.
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Affiliation(s)
- Hua Jiang
- Department of Urology, Affiliated Zhongda Hospital of Southeast University, No. 87Dingjiaqiao, Gulou District, Nanjing, 210009, China
| | - Keyi Wang
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - Heng Zhang
- Department of Urology, Guiqian International General Hospital, Guizhou, 550018, China
| | - Bin Yang
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - Weipu Mao
- Department of Urology, Affiliated Zhongda Hospital of Southeast University, No. 87Dingjiaqiao, Gulou District, Nanjing, 210009, China
| | - Ming Chen
- Department of Urology, Affiliated Zhongda Hospital of Southeast University, No. 87Dingjiaqiao, Gulou District, Nanjing, 210009, China.
| | - Shuigen Zhou
- Department of Urology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No.305 Zhongshan Dong Road, Xuanwu District, Nanjing, 210000, China.
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5
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Stamatelou K, Goldfarb DS. Epidemiology of Kidney Stones. Healthcare (Basel) 2023; 11:healthcare11030424. [PMID: 36766999 PMCID: PMC9914194 DOI: 10.3390/healthcare11030424] [Citation(s) in RCA: 47] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/25/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
In the past two decades, major breakthroughs that improve our understanding of the pathophysiology and therapy of kidney stones (KS) have been lacking. The disease continues to be challenging for patients, physicians, and healthcare systems alike. In this context, epidemiological studies are striving to elucidate the worldwide changes in the patterns and the burden of the disease and identify modifiable risk factors that contribute to the development of kidney stones. Our expanding knowledge of the epidemiology of kidney stones is of paramount importance and largely upgrades the modern management of the disease. In this paper, we review the variables affecting prevalence and incidence, including age, gender, race, ethnicity, occupation, climate, geography, systemic diseases, diabetes, vascular disease, chronic kidney disease, and dietary risk factors relevant to kidney stones.
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Affiliation(s)
- Kyriaki Stamatelou
- “MESOGEIOS” Nephrology Center, Haidari and Nephros.eu Private Clinic, 11527 Athens, Greece
| | - David S. Goldfarb
- Nephrology Division, NYU Langone Health and NYU Grossman School of Medicine, NY Nephrology Section, NY Harbor VA Healthcare System, New York, NY 10016, USA
- Correspondence: ; Tel.: +1-212-686-7500 (ext. 3877); Fax: +1-212-951-6842
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6
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Smeulders N, Cho A, Alshaiban A, Read K, Fagan A, Easty M, Minhas K, Barnacle A, Hayes W, Bockenhauer D. Shockwaves and the Rolling Stones: An Overview of Pediatric Stone Disease. Kidney Int Rep 2023; 8:215-228. [PMID: 36815103 PMCID: PMC9939363 DOI: 10.1016/j.ekir.2022.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/14/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022] Open
Abstract
Urinary stone disease is a common problem in adults, with an estimated 10% to 20% lifetime risk of developing a stone and an annual incidence of almost 1%. In contrast, in children, even though the incidence appears to be increasing, urinary tract stones are a rare problem, with an estimated incidence of approximately 5 to 36 per 100,000 children. Consequently, typical complications of rare diseases, such as delayed diagnosis, lack of awareness, and specialist knowledge, as well as difficulties accessing specific treatments also affect children with stone disease. Indeed, because stone disease is such a common problem in adults, frequently, it is adult practitioners who will first be asked to manage affected children. Yet, there are unique aspects to pediatric urolithiasis such that treatment practices common in adults cannot necessarily be transferred to children. Here, we review the epidemiology, etiology, presentation, investigation, and management of pediatric stone disease; we highlight those aspects that separate its management from that in adults and make a case for a specialized, multidisciplinary approach to pediatric stone disease.
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Affiliation(s)
- Naima Smeulders
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
| | - Alexander Cho
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
| | - Abdulelah Alshaiban
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
- Department of Pediatrics, College of Medicine, King Saud University, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Katharine Read
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
| | - Aisling Fagan
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
| | - Marina Easty
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
| | - Kishore Minhas
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
| | - Alex Barnacle
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
| | - Wesley Hayes
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
| | - Detlef Bockenhauer
- Great Ormond Street Hospital National Health Service Foundation Trust, London, UK
- Department of Renal Medicine, University College London, London, UK
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7
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Juliebø-Jones P, Ulvik Ø, Beisland C, Somani BK. Paediatric Ureteroscopy (P-URS) reporting checklist: a new tool to aid studies report the essential items on paediatric ureteroscopy for stone disease. Urolithiasis 2023; 51:35. [PMID: 36695936 PMCID: PMC9876849 DOI: 10.1007/s00240-023-01408-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 01/14/2023] [Indexed: 01/26/2023]
Abstract
The burden of urolithiasis in children is increasing and this is mirrored by the number of surgical interventions in the form of ureteroscopy (URS). There exist many challenges in performing this surgery for this special patient group as well as a lack of consensus on technique. There is also large variation in how results are described and reported. There exists therefore, a need to improve and standardise the core outcomes, which are reported. To this end, we developed a new checklist to aid studies report the essential items on paediatric URS for stone disease. The Paediatric Ureteroscopy (P-URS) reporting checklist comprises four main sections (study details, pre-operative, operative and post-operative) and a total of 20 items. The tool covers a range of important elements, such as pre-stenting, complications, follow-up, stone-free rate, concomitant medical expulsive therapy and imaging, which are often lacking in studies. The checklist provides a summary of essential items that authors can use as a reference to improve general standards of reporting paediatric URS studies and increase the body of knowledge shared accordingly.
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Affiliation(s)
- Patrick Juliebø-Jones
- Department of Urology, Haukeland University Hospital, Bergen, Norway.
- Department of Clinical Medicine, University of Bergen, Bergen, Norway.
- EAU YAU Urolithiasis Group, Arnhem, The Netherlands.
| | - Øyvind Ulvik
- Department of Urology, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Christian Beisland
- Department of Urology, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Bhaskar K Somani
- Department of Urology, University Hospital Southampton, Southampton, UK
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8
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Juliebø-Jones P, Keller EX, Tzelves L, Beisland C, Somani BK, Gjengstø P, Æsøy MS, Ulvik Ø. Paediatric kidney stone surgery: state-of-the-art review. Ther Adv Urol 2023; 15:17562872231159541. [PMID: 36950219 PMCID: PMC10026105 DOI: 10.1177/17562872231159541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 02/07/2023] [Indexed: 03/24/2023] Open
Abstract
While urolithiasis in children is rare, the global incidence is rising, and the volume of minimally invasive surgeries being performed reflects this. There have been many developments in the technology, which have supported the advancement of these interventions. However, innovation of this kind has also resulted in wide-ranging practice patterns and debate regarding how they should be best implemented. This is in addition to the extra challenges faced when treating stone disease in children where the patient population often has a higher number of comorbidities and for example, the need to avoid risk such as ionising exposure is higher. The overall result is a number of challenges and controversies surrounding many facets of paediatric stone surgery such as imaging choice, follow-up and different treatment options, for example, medical expulsive therapy, shockwave lithotripsy, ureteroscopy, and percutaneous nephrolithotomy. This article provides an overview of the current status of paediatric stone surgery and discussion on the key topics of debate.
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Affiliation(s)
| | - Etienne Xavier Keller
- Department of Urology, University Hospital
Zurich, University of Zurich, Zurich, Switzerland EAU YAU Urolithiasis
Group, Arnhem, The Netherlands
| | - Lazaros Tzelves
- Second Department of Urology, National and
Kapodistrian University of Athens, Sismanogleio General Hospital, Athens,
Greece EAU YAU Urolithiasis Group, Arnhem, The Netherlands
| | - Christian Beisland
- Department of Urology, Haukeland University
Hospital, Bergen, NorwayDepartment of Clinical Medicine, University of
Bergen, Bergen, Norway
| | - Bhaskar K Somani
- Department of Urology, University Hospital
Southampton, Southampton, UK
| | - Peder Gjengstø
- Department of Urology, Haukeland University
Hospital, Bergen, Norway
| | | | - Øyvind Ulvik
- Haukeland University Hospital, Bergen,
NorwayDepartment of Clinical Medicine, University of Bergen, Bergen,
Norway
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9
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Yang S, Yao G, Chen X, Shi H, Lou C, Ren S, Jiao Z, Wang C, Kong X, Wu Q. A novel mutation of KCNJ1 identified in an affected child with nephrolithiasis. BMC Nephrol 2022; 23:227. [PMID: 35761198 PMCID: PMC9235087 DOI: 10.1186/s12882-022-02783-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 04/04/2022] [Indexed: 11/05/2022] Open
Abstract
Nephrolithiasis is not common in children, but the incidence is gradually increased in these years. Urinary tract malformations, urinary infection, dietary habits, geographic region and genetic factor are involved in the etiology of nephrolithiasis. For the affected child, it is especially important to elucidate the etiology, which may provide an accurate diagnosis, a personalized therapy and effective follow-up strategy. Here to seek the etiology of a ten-year-old boy incidentally found with nephrolithiasis, next generation sequencing (NGS) including a panel with 248 genes involved in hereditary kidney diseases was performed for the boy and identified two mutations of KCNJ1, c.89G > A (p.C30Y) and c.65G > T (p.R22M), and the later was a novel missense mutation originated from his father. The child was confirmed with type II Bartter syndrome (BS) caused by KCNJ1 mutations. Our study suggests that BS may be difficult to get diagnosed at an early stage based on clinical manifestations or biochemical laboratory tests, and NGS is an efficient way to determine the etiology and provide further treatment and guide fertility counseling for the affected family.
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Affiliation(s)
- Saisai Yang
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Guanghui Yao
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xin Chen
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Huirong Shi
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Chihhong Lou
- Gene Editing and Viral Vector Core, City of Hope Medical Center, Duarte, Los Angeles, CA, 91006, USA
| | - Shumin Ren
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zhihui Jiao
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Cong Wang
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xiangdong Kong
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Qinghua Wu
- Department of Obstetrics and Gynecology, Center of Genetics and Prenatal Diagnosis, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
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10
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Ikeyama S, Kanda S, Sakamoto S, Sakoda A, Miura K, Yoneda R, Nogi A, Ariji S, Shimoda M, Ono M, Kanda S, Yokoyama S, Takahashi K, Yokoyama Y, Hattori M. A case of early onset cystinuria in a 4-month-old girl. CEN Case Rep 2022; 11:216-219. [PMID: 34669168 PMCID: PMC9061909 DOI: 10.1007/s13730-021-00655-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/12/2021] [Indexed: 10/20/2022] Open
Abstract
Cystinuria is an autosomal recessive disorder characterized by a decrease in the reabsorption of cystine and dibasic amino acids (lysine, ornithine, and arginine) in the renal proximal tubule. It presents with recurrent urolithiasis. Cystinuria accounts for 6-8% of all pediatric urolithiasis. The age of onset is typically 10-30 years. Here, we report a case of early-onset cystinuria. A 4-month-old girl presented with hematuria. We noticed multiple renal calculi in ultrasonography and abdominal computerized tomography scans. The diagnosis was cystinuria with urinary calculus analysis and urinary amino acid analysis. The patient was treated with urine alkalinization and cystine chelating drugs. Gene analysis showed a P482L heterozygous mutation from her mother, and an A70V heterozygous mutation from her father, in the SLC7A9 gene. This gene encodes a putative subunit of the neutral and basic amino acid transport protein, BAT1. Although cystinuria is an autosomal recessive disease, there have been previous reports of P482L heterozygous mutations greatly suppressing cystine reabsorption and causing cystinuria symptoms. Therefore, the highly influential P482L mutation of the SLC7A9 gene may have contributed to the onset of this autosomal recessive disease at an extremely young age.
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Affiliation(s)
- Shigo Ikeyama
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Shoichiro Kanda
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan.
- Department of Pediatrics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
- Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo, Japan.
| | - Shinichi Sakamoto
- Department of Urology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Akiko Sakoda
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - Kenichiro Miura
- Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo, Japan
| | - Ryu Yoneda
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Ayumi Nogi
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Shohei Ariji
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Mai Shimoda
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Mayumi Ono
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Sachiko Kanda
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Seiichiro Yokoyama
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Kan Takahashi
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Yoshiki Yokoyama
- Department of Pediatrics, Ome Municipal General Hospital, Ome city, Japan
| | - Motoshi Hattori
- Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo, Japan
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11
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Juliebø-Jones P, Æsøy MS, Gjengstø P, Beisland C, Ulvik Ø. Ureteroscopy for stone disease in the paediatric population: lessons learned and outcomes in a Nordic setting. Ther Adv Urol 2022; 14:17562872221118727. [PMID: 36032655 PMCID: PMC9403456 DOI: 10.1177/17562872221118727] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/14/2022] [Indexed: 11/18/2022] Open
Abstract
Introduction: Paediatric stone disease is rare in the Nordic communities. Still, the
condition can require surgical intervention in the form of ureteroscopy
(URS). Here, we report outcomes achieved at a regional (tertiary)
centre. Patients and methods: Retrospective analysis was performed of consecutive patients (<18 years of
age) undergoing URS for stone disease between 2010 and 2021. Outcomes of
interest included stone-free rate (SFR) determined using a definition of no
residual fragments ⩾ 3 mm on imaging and complications classified according
to Clavien–Dindo system. Results: In total, 23 patients underwent 47 URS procedures for a total of 31 stone
episodes. Mean age was 9 (range 1–17) years and male-to-female ratio was
6:17. Overall, 35% had at least one medical comorbidity. Ultrasound
determined preoperative stone status in 87%. Mean largest index and
cumulative stone sizes were 9 (range 3–40) and 12 (range 3–40) mm,
respectively. Overall, 32% had multiple stones. Lower pole was the commonest
stone location (39%). No patients underwent elective pre-operative stenting.
Ureteral access sheaths were not used in any cases. Access to upper urinary
tract at first procedure was successful in 94%. Initial and final SFR was
61% and 90%, respectively. No intra-operative complications were recorded.
Overall post-operative complication rate was 17.5%. Urinary tract infection
(CD II) was the commonest adverse event (12.5%). Conclusion: Paediatric URS can be delivered in the setting of a regional centre without
compromising outcomes. This includes when carried out by adult
endourologists, without routine pre-stenting and omitting use of ureteric
access sheath.
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Affiliation(s)
- Patrick Juliebø-Jones
- Department of Urology, Haukeland University Hospital, Jonas Lies vei 65, 5021 Bergen, Norway
| | | | - Peder Gjengstø
- Department of Urology, Haukeland University Hospital, Bergen, Norway
| | - Christian Beisland
- Department of Urology, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway
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12
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Filler G, Salerno F, McIntyre CW, de Ferris MEDG. Animal, Human, and 23Na MRI Imaging Evidence for the Negative Impact of High Dietary Salt in Children. CURRENT PEDIATRICS REPORTS 2021; 9:110-117. [PMID: 34567839 PMCID: PMC8449209 DOI: 10.1007/s40124-021-00249-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/18/2021] [Indexed: 02/08/2023]
Abstract
PURPOSE OF THE REVIEW Conditions typically prevalent in adults such as hypertension, kidney stones, osteoporosis, and chronic kidney disease are increasing among adolescents and young adults (AYA). The purpose of this review is to describe the association of these conditions to a high salt diet among pediatric patients. RECENT FINDINGS We present animal, human, and 23Na MRI evidence associated with the negative impact of high dietary salt in children. Special focus is placed on novel 23Na MRI imaging which reveals the important concept of a third compartment for sodium storage in soft tissue. Finally, we make recommendations on who should not be on a low salt diet. SUMMARY A high salt intake predisposes children and AYA to considerable morbidity. We exhort the reader to engage in advocacy efforts to curve the incidence and prevalence of high salt-related life-limiting conditions.
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Affiliation(s)
- Guido Filler
- Departments of Pediatrics, Schulich School of Medicine and Dentistry, University of Western Ontario, 800 Commissioners Road East, London, ON E3-206N6A 5W9 Canada
- Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
- Pathology & Laboratory Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
- Children’s Health Research Institute, University of Western Ontario, London, Canada
- Lilibeth Caberto Kidney Clinical Research Unit, London, ON Canada
| | - Fabio Salerno
- Lilibeth Caberto Kidney Clinical Research Unit, London, ON Canada
- Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
| | - Christopher William McIntyre
- Departments of Pediatrics, Schulich School of Medicine and Dentistry, University of Western Ontario, 800 Commissioners Road East, London, ON E3-206N6A 5W9 Canada
- Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
- Children’s Health Research Institute, University of Western Ontario, London, Canada
- Lilibeth Caberto Kidney Clinical Research Unit, London, ON Canada
- Biophysics, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
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13
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Thongprayoon C, Vaughan LE, Chewcharat A, Kattah AG, Enders FT, Kumar R, Lieske JC, Pais VM, Garovic VD, Rule AD. Risk of Symptomatic Kidney Stones During and After Pregnancy. Am J Kidney Dis 2021; 78:409-417. [PMID: 33867205 PMCID: PMC8384636 DOI: 10.1053/j.ajkd.2021.01.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/05/2021] [Indexed: 11/11/2022]
Abstract
RATIONALE & OBJECTIVE There are several well-known anatomical and physiological changes during pregnancy that could contribute to kidney stone formation, but evidence that they increase the risk of kidney stones during pregnancy is lacking. We determined whether there was an increased risk of a first-time symptomatic kidney stone during and after pregnancy. STUDY DESIGN A population-based matched case-control study. SETTING & PARTICIPANTS 945 female first-time symptomatic kidney stone formers aged 15-45 years and 1,890 age-matched female controls in Olmsted County, MN, from 1984-2012. The index date was the date of onset of a symptomatic kidney stone for both the case and her matched controls. EXPOSURE The primary exposure was pregnancy with assessment for variation in risk across different time intervals before, during, and after pregnancy. Medical records were manually reviewed to determine the conception and delivery dates for pregnancies. OUTCOME Medical record-validated first-time symptomatic kidney stone. ANALYTICAL APPROACH Conditional and unconditional multivariable logistic regression analysis. RESULTS Compared with nonpregnant women, the odds of a symptomatic kidney stone forming in women was similar in the first trimester (OR, 0.92; P=0.8), began to increase during the second trimester (OR, 2.00; P=0.007), further increased during the third trimester (OR, 2.69; P=0.001), peaked at 0 to 3 months after delivery (OR, 3.53; P<0.001), and returned to baseline by 1year after delivery. These associations persisted after adjustment for age and race or for diabetes mellitus, hypertension, and obesity. These results did not significantly differ by age, race, time period, or number of prior pregnancies. Having a prior pregnancy (delivery date>1year ago) was also associated with a first-time symptomatic kidney stone (OR, 1.27; P=0.01). LIMITATIONS Observational study design in a predominantly White population. The exact timing of stone formation cannot be determined. CONCLUSIONS Pregnancy increases the risk of a first-time symptomatic kidney stone. This risk peaks close to delivery and then improves by 1 year after delivery, though a modest risk of a kidney stone still exists beyond 1 year after delivery.
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Affiliation(s)
| | | | - Api Chewcharat
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | - Andrea G Kattah
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | | | - Rajiv Kumar
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | - John C Lieske
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | - Vernon M Pais
- Section of Urology, Dartmouth-Hitchcock Medical Center, Lebanon, NH
| | - Vesna D Garovic
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN; Department of Obstetrics, Mayo Clinic, Rochester, MN
| | - Andrew D Rule
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN.
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14
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Du Y, Roger VB, Mena J, Kang M, Stoller ML, Ho SP. Structural and chemical heterogeneities of primary hyperoxaluria kidney stones from pediatric patients. J Pediatr Urol 2021; 17:214.e1-214.e11. [PMID: 33495102 PMCID: PMC8709938 DOI: 10.1016/j.jpurol.2020.11.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 11/09/2020] [Accepted: 11/13/2020] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Calcium oxalate stones are the most common type among stone-forming patients and in some cases result from predisposed genetic conditions. In this work, we examined the differences in structure and chemical composition between oxalate stones from patients from three groups: 1) pediatric patients that were genetically predisposed (primary hyperoxaluria) to form stones (PPH); 2) control pediatric patients that did not have such genetic predisposition (PN-PH); 3) adult patients that formed oxalate stones without the genetic predisposition (A-CaOx). A variety of instrumental analyses were conducted to identify physicochemical properties of stones characteristic of predisposed pediatric (PPH), pediatric hyperoxaluria (PN-PH), and adult (A-CaOx) patient populations. METHODS Genetic variants of 16 stone-forming patients were determined using whole-exome gene sequencing. Components of stones from PPH (n = 6), PN-PH (n = 5), and A-CaOx (n = 5) groups were identified using Fourier transform infrared (FTIR) spectroscopy. Stone morphology and density were evaluated using high resolution X-ray computed tomography (micro-XCT). Stone microstructure and elemental composition were mapped with scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy, respectively. RESULTS Calcium oxalate bipyramidal crystals were found on stones from all groups. Stones from PPH patients with PH types I and II were composed of calcium oxalate monohydrate (COM) with relatively uniform mineral density (1224 ± 277 mg/cc) and distinct smooth surfaces. By contrast, micro-spherical calcium phosphate particles were found only on PN-PH stones, which also showed a broader range of mineral densities (1266 ± 342 mg/cc). Stones from the PN-PH group also contained phosphorus (P), which was absent in NP-PH stones. A-CaOx stones were of significantly lower mineral density (645 ± 237 mg/cc) than pediatric stones and were more heterogeneous in their elemental composition. CONCLUSION Unique structural and compositional characteristics were identified in stones from pediatric patients with primary hyperoxaluria. These include the absence of phosphorus, a narrower mineral density distribution, and a uniform elemental composition compared to stones from pediatric patients without the genetic predisposition. Thus, characterization of stones at the macro- and micro-scales in combination with genetic testing of patients can provide insights and accurate diagnosis to develop a treatment plan for effective patient care.
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Affiliation(s)
- Yuan Du
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - Vincent Blay Roger
- Division of Preclinical Education, Biomaterials & Engineering, School of Dentistry, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Jorge Mena
- Department of Urology, School of Medicine, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Misun Kang
- Division of Preclinical Education, Biomaterials & Engineering, School of Dentistry, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Marshall L Stoller
- Department of Urology, School of Medicine, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Sunita P Ho
- Division of Preclinical Education, Biomaterials & Engineering, School of Dentistry, University of California San Francisco, San Francisco, CA, 94143, USA; Department of Urology, School of Medicine, University of California San Francisco, San Francisco, CA, 94143, USA.
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15
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Epidemiologie. Urolithiasis 2021. [DOI: 10.1007/978-3-662-62454-8_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Wändell P, Carlsson AC, Li X, Sundquist J, Sundquist K. Urolithiasis in second-generation immigrant children younger than 18 years of age in Sweden. Acta Paediatr 2021; 110:340-346. [PMID: 32274826 DOI: 10.1111/apa.15298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/30/2020] [Accepted: 04/01/2020] [Indexed: 11/29/2022]
Abstract
AIM To compare incidence of urolithiasis in second-generation immigrant children aged 0-17 years to children of Swedish-born parents. METHODS A nationwide study of individuals residing in Sweden. Urolithiasis was defined as having at least one registered diagnosis of urolithiasis in the Swedish National Patient Register between January 1, 1998 and December 31, 2015. Cox regression analysis was used to estimate the relative risk (hazard ratios (HR) with 95% confidence intervals (CI)) of incident urolithiasis compared to individuals with Swedish-born parents. The models were stratified by sex and adjusted for age, co-morbidities and sociodemographic status of parents. RESULTS Totally, 1653 incident cases of urolithiasis were registered, 658 boys and 995 girls, with a mean annual incidence per 100 000 person-years for children with Swedish-born parents of 4.0 (95% CI 3.7-4.3) in boys and 6.7 (95% CI 6.2-7.2) in girls, and for children with foreign-born parents of 5.3 (95% CI 5.1-5.4) in boys and 7.2 (95% CI 6.9-7.4) in girls. The fully adjusted HRs of urolithiasis in second-generation immigrants were non-significant, in boys (1.20, 95% CI 0.99-1.46) and girls (0.95, 95% CI 0.80-1.12). CONCLUSION The risk of urolithiasis in second-generation immigrants was not significantly different from that of children with Swedish-born parents.
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Affiliation(s)
- Per Wändell
- Division of Family Medicine and Primary Care Department of Neurobiology, Care Sciences and Society Karolinska Institutet Huddinge Sweden
| | - Axel C. Carlsson
- Division of Family Medicine and Primary Care Department of Neurobiology, Care Sciences and Society Karolinska Institutet Huddinge Sweden
- Academic Primary Health Care Centre Stockholm Region Stockholm Sweden
| | - Xinjun Li
- Center for Primary Health Care Research Lund University Malmö Sweden
| | - Jan Sundquist
- Center for Primary Health Care Research Lund University Malmö Sweden
- Department of Family Medicine and Community Health Department of Population Health Science and Policy Icahn School of Medicine at Mount Sinai New York NY USA
- Center for Community‐based Healthcare Research and Education (CoHRE) Department of Functional Pathology School of Medicine Shimane University Matsue Japan
| | - Kristina Sundquist
- Center for Primary Health Care Research Lund University Malmö Sweden
- Department of Family Medicine and Community Health Department of Population Health Science and Policy Icahn School of Medicine at Mount Sinai New York NY USA
- Center for Community‐based Healthcare Research and Education (CoHRE) Department of Functional Pathology School of Medicine Shimane University Matsue Japan
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Ralph D, Allawh R, Terry IF, Terry SF, Uitto J, Li Q. Kidney Stones are Prevalent in Individuals with Pseudoxanthoma Elasticum, a Genetic Ectopic Mineralization Disorder. INTERNATIONAL JOURNAL OF DERMATOLOGY AND VENEREOLOGY 2020; 3:198-204. [PMID: 34925949 PMCID: PMC8680818 DOI: 10.1097/jd9.0000000000000126] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Pseudoxanthoma elasticum (PXE) is a rare genetic disorder caused by loss-of-function mutations in the ABCC6 gene. While PXE is characterized by ectopic mineralization of connective tissues clinically affecting the skin, eyes, and cardiovascular system, kidney stones were reported in some individuals with PXE. The aim of this study is to determine whether kidney stones are an incidental finding or a frequent manifestation of PXE. We investigated the genetic basis of two siblings diagnosed with PXE. The younger patient presented with recurrent kidney stones since age 8. To address whether kidney stones are associated with PXE, the prevalence of kidney stones in a survey cohort of 563 respondents with PXE was compared to that of a general U.S. population survey, NHANES (National Health and Nutrition Examination Survey), with 28,629 participants. Genetic analysis in both patients identified compound heterozygous mutations in ABCC6, c.2787+1G>T and c.3774_3775insC. The analysis of participants aged 20 and older revealed that 23.4% of PXE patients had previously had a kidney stone, a significant increase compared to 9.2% in the general population. In addition, 17.8% of PXE patients reported their first kidney stone episode before age 18. PXE correlates with an increased risk of developing kidney stones with considerable morbidity and health-care cost.
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Affiliation(s)
- Douglas Ralph
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, and The PXE International Center of Excellence in Research and Clinical Care, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Rina Allawh
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, and The PXE International Center of Excellence in Research and Clinical Care, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Ian F. Terry
- PXE International, Inc., Washington, DC 20008, USA
| | | | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, and The PXE International Center of Excellence in Research and Clinical Care, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Qiaoli Li
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, and The PXE International Center of Excellence in Research and Clinical Care, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Imaging modalities and treatment of paediatric upper tract urolithiasis: A systematic review and update on behalf of the EAU urolithiasis guidelines panel. J Pediatr Urol 2020; 16:612-624. [PMID: 32739360 DOI: 10.1016/j.jpurol.2020.07.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Prompt diagnosis and treatment of paediatric urolithiasis are required to avoid long term sequelae of renal damage. OBJECTIVE To systematically review the literature regarding the diagnostic imaging modalities and treatment approaches for paediatric urolithiasis. STUDY DESIGN PubMed, Science Direct, Scopus and Web of Science were systematically searched from January 1980-January 2019. 76 full-text articles were included. RESULTS Ultrasound and Kidney-Ureter-Bladder radiography are the baseline diagnostic examinations. Non-contrast Computed Tomography (CT) is the second line choice with high sensitivity (97-100%) and specificity (96-100%). Magnetic Resonance Urography accounts only for 2% of pediatric stone imaging studies. Expectant management for single, asymptomatic lower pole renal stones is an acceptable initial approach, especially in patients with non-struvite, non-cystine stones<7 mm. Limited studies exist on medical expulsive therapy as off-label treatment. Extracorporeal shock wave lithotripsy (SWL) is the first-line treatment with overall stone free rates (SFRs) of 70-90%, retreatment rates 4-50% and complication rates up to 15%. Semi-rigid ureteroscopy is effective with SFRs of 81-98%, re-treatment rates of 6.3-10% and complication rates of 1.9-23%. Flexible ureteroscopy has shown SFRs of 76-100%, retreatment rates of 0-19% and complication rates of 0-28%. SFRs after first and second-look percutaneous nephrolithotomy (PNL) are 70.1-97.3% and 84.6-97.5%, respectively with an overall complication rate of 20%. Open surgery is seldom used, while laparoscopy is effective for stones refractory to SWL and PNL. Limited data exist for robot-assisted management. CONCLUSIONS In the initial assessment of paediatric urolithiasis, US is recommended as first imaging modality, while non-contrast CT is the second option. SWL is recommended as first line treatment for renal stones <20 mm and for ureteral stones<10 mm. Ureteroscopy is a feasible alternative both for ureteral stones not amenable to SWL as well as for renal stones <20 mm (using flexible). PNL is recommended for renal stones >20 mm.
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19
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Abstract
The incidence and prevalence of kidney stones have increased over the past four decades. However, the diagnosis of 'kidney stone' can range from an incidental asymptomatic finding of limited clinical significance to multiple painful episodes of ureteral obstruction with eventual kidney failure. Some general strategies may be useful to prevent the recurrence of kidney stones. In particular, greater attention to kidney stone classification, approaches to assessing the risk of recurrence and individualized prevention strategies may improve the clinical care of stone formers. Although there have been some advances in approaches to predicting the recurrence of kidney stones, notable challenges remain. Studies of kidney stone prevalence, incidence and recurrence have reported inconsistent findings, in part because of the lack of a standardized stone classification system. A kidney stone classification system based on practical and clinically useful measures of stone disease may help to improve both the study and clinical care of stone formers. Any future kidney stone classification system should be aimed at distinguishing asymptomatic from symptomatic stones, clinically diagnosed symptomatic stone episodes from self-reported symptomatic stone episodes, symptomatic stone episodes that are confirmed from those that are suspected, symptomatic recurrence from radiographic recurrence (that is, with radiographic evidence of a new stone, stone growth or stone disappearance from presumed passage) and determine stone composition based on mutually exclusive categories.
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21
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Robinson C, Shenoy M, Hennayake S. No stone unturned: The epidemiology and outcomes of paediatric urolithiasis in Manchester, United Kingdom. J Pediatr Urol 2020; 16:372.e1-372.e7. [PMID: 32249190 DOI: 10.1016/j.jpurol.2020.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 03/12/2020] [Indexed: 01/22/2023]
Abstract
BACKGROUND The epidemiology and risk factors for paediatric urolithiasis (UL) in developed countries are evolving, with increasing rates of metabolic stone-formers. In the United Kingdom (UK), only a single London cohort has been studied in the past three decades. Regional disease patterns across the UK remain unknown. UL has been associated with an increased risk of chronic kidney disease in adults, but long-term paediatric outcomes remain poorly understood. METHODS We assessed the epidemiology of paediatric UL by defining the demographics, incidence, aetiology, recurrence rates and outcomes at tertiary nephro-urology centres in Greater Manchester. Health records of 177 consecutive paediatric urology referrals (0-18 years) for UL between 2002 and 2015 were retrospectively included for observational analysis. Metabolic screening was performed in 105 children. RESULTS The incidence of paediatric urology referrals for UL was 1.77/100,000 person-years, increasing annually by 13.6%. Mean patient age was 8.2 years and the male:female ratio was 1.3:1. The upper urinary tract was involved in more than 90% of cases and 45% of children presented with multiple calculi. Metabolic abnormalities were identified in 52% of children screened: hypercalciuria (64%), hyperoxaluria (18%) and cystinuria (11%) were the most common. Significant family history was predictive of metabolic abnormalities (OR 4.9:1, 95% CI 1.4-17.0). 30% of children had infective stones, which were more common in children less than 6 years. Ultrasound was found to be 90% sensitive for UL detection. Dimercaptosuccinic acid (DMSA) imaging identified renal scarring in 33 of the 55 children tested (60%). Recurrence was observed in 18% of children over mean 6.4 year follow-up and was more common in metabolic stone-formers. Spontaneous passage was observed in 83% of stones ≤ 5 mm, 69% between 5 and 10 mm and only one calculi > 10 mm. CONCLUSIONS The incidence of paediatric urology referrals for UL is rising in North West England. Metabolic abnormalities were detected in half of the children tested, justifying comprehensive screening. Recurrence is common following paediatric UL, reinforcing the need for stone prevention strategies. The majority of calculi less than 10 mm were found to pass spontaneously with supportive measures, which favours an initial observation period over surgical intervention for small calculi. UL was associated with renal scarring in the analysed population and therefore, children with UL require long-term assessment of blood pressure and proteinuria.
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Affiliation(s)
- Cal Robinson
- Royal Manchester Children's Hospital, Manchester, UK; University of Manchester, Medical School, Manchester, UK; Department of Pediatrics, McMaster University, Hamilton ON, Canada.
| | - Mohan Shenoy
- Royal Manchester Children's Hospital, Manchester, UK
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22
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Educational review: role of the pediatric nephrologists in the work-up and management of kidney stones. Pediatr Nephrol 2020; 35:383-397. [PMID: 30607567 DOI: 10.1007/s00467-018-4179-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/23/2018] [Accepted: 12/13/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND The incidence of nephrolithiasis in children and adolescents is increasing and appears to double every 10 years. The most important role of the pediatric nephrologist is to diagnose and modify various metabolic and non-metabolic risk factors, as well as prevent long-term complications especially in the case of recurrent nephrolithiasis. OBJECTIVE The purpose of this review is to summarize the existing literature on the etiology and management of pediatric nephrolithiasis. RESULTS The incidence of kidney stones is increasing; dietary and environmental factors are probably the main causes for this increased incidence. In most pediatric patients, the etiology for the kidney stones can be identified. Metabolic factors, such as hypercalciuria and hypocitraturia, urinary tract infection, and urinary stasis, constitute leading causes. Herein, we review the etiologies, diagnostic work-up, and treatment options for the most prevalent causes of kidney stones. The detrimental effects of excessive dietary sodium, reduced fluid intake, and the benefits of plant-based over animal-based protein consumption on urinary crystal formation are discussed. We also review the long-term complications. CONCLUSIONS Pediatric nephrologists have an important role in the diagnostic work-up and prevention of recurring nephrolithiasis.
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Stone recurrence among childhood kidney stone formers: results of a nationwide study in Iceland. Urolithiasis 2020; 48:409-417. [PMID: 32107578 DOI: 10.1007/s00240-020-01179-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 01/30/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVES To examine the stone recurrence rate among childhood kidney stone formers in the Icelandic population. MATERIALS AND METHODS We retrospectively examined kidney stone recurrence in a recently reported population-based sample of 190 individuals who experienced their first stone before 18 years of age in the period 1985-2013. Of these 190 individuals, 112 (59%) were females and the median (range) age at the incident stone diagnosis was 15.0 (0.2-17.9) years. Stone recurrence was defined as an acute symptomatic episode with imaging confirmation or self-reported stone passage, new stone detected by imaging in asymptomatic patients, and suspected clinical stone episode without verification. The Kaplan-Meier method was used to assess stone-free survival and the Chi-square, Fisher's exact, Wilcoxon rank-sum and the log-rank tests to compare groups. RESULTS A total of 68 (35%) individuals experienced a second stone event, 1.7 (0.9-18.9) years after the initial diagnosis. The recurrence rate was 26%, 35%, 41% and 46% after 5, 10, 15 and 20 years of follow-up, respectively. The 5-year recurrence rate increased with time and was 9%, 24% and 37% in the periods 1985-1994, 1995-2004 and 2005-2013, respectively (P = 0.005). No difference in stone recurrence was observed between the sexes (P = 0.23). CONCLUSIONS In our population-based sample of childhood kidney stone formers, the stone recurrence rate is similar to that reported for adults. The observed rise in stone recurrence with time may be related to closer patient follow-up in recent years or increased stone risk in general.
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Abstract
Objectives: The aim of this study was to investigate frequencies of kidney stone constituents in a Norwegian population and examine trends over time by comparing with an earlier study of this population. Materials and methods: Upper urinary tract calculi consecutively collected from patients who underwent stone surgery at Akershus University Hospital from July 2014 to December 2017, in total 1252 calculi, were analysed by infrared spectroscopy. The results were compared with a study of 500 calculi collected from June 1975 to September 1980 at the same hospital. Results: The male:female ratio was 1.83:1. Single-component stones constituted 39%, 35% were binary, and 25% ternary. Main stone component frequencies were oxalate 71.3%, calcium oxalate monohydrate 53.7% with higher occurrence in males, calcium oxalate dihydrate 17.6%, carbonate apatite 10.8% and struvite 5.7%, both with higher occurrence in females, uric acid 8.9% with a non-significant male predominance, brushite 1.6% and cystine about 1%. Over four decades the frequency of UA stones increased by 4.6-times, whereas struvite and pure carbonate apatite stones decreased and no change was observed for brushite stones. Conclusion: Frequencies of kidney stone types in this Norwegian population are mainly in accordance with other studies, except a large increase in UA stones over four decades, partly caused by a particularly low frequency of UA stones in the old study, a decreased carbonate apatite frequency over four decades, and an unaltered brushite frequency. Also, in contrast to other studies, a relatively small and non-significant male UA stone predominance was found.
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Affiliation(s)
- Gunnhild Kravdal
- a Multidisciplinary Laboratory Medicine and Medical Biochemistry , Akershus University Hospital HF , Lørenskog , Norway
| | - Dan Helgø
- b Department of Urology , Akershus University Hospital HF , Lørenskog , Norway
| | - Morten K Moe
- a Multidisciplinary Laboratory Medicine and Medical Biochemistry , Akershus University Hospital HF , Lørenskog , Norway
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Hua Y, Krupp D, Esche J, Remer T. Increased body fatness adversely relates to 24-hour urine pH during childhood and adolescence: evidence of an adipo-renal axis. Am J Clin Nutr 2019; 109:1279-1287. [PMID: 30997510 DOI: 10.1093/ajcn/nqy379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 12/10/2018] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Reduced net acid excretion (NAE) capacity indicates a decrease in renal function. This reduction manifests as a disproportionally low 24-h urine pH in relation to the sum of actually excreted ammonium and titratable acidity by the kidney. OBJECTIVE The aim of this study was to test the hypothesis that higher body fatness is one determinant of kidney function impairment with a lowered urine pH even at a young age. METHODS NAE, pH, urea, and creatinine were measured in 24-h urine samples from 524 healthy children and adolescents (aged 6-17 y) participating in the DOrtmund Nutritional and Anthropometric Longitudinally Designed (DONALD) Study. Body fatness was assessed anthropometrically by body mass index-standard deviation score (BMI-SDS), fat mass index (FMI), body fat % (BF%), and waist circumference (WC). Multivariable linear and mixed linear regressions were used to examine cross-sectionally (n = 524 urine samples; age groups: 6-8, 9-11, 12-14, 15-17 y) and longitudinally (n = 1999 urine samples) the associations of body fatness with 24-h urine pH as the outcome variable, respectively. RESULTS After adjusting for the kidneys' total net acid load (24-h urinary NAE) and further relevant covariates, FMI showed significant inverse relations with urinary pH in all 4 age groups, and BMI-SDS, BF%, and WC each in 3 out of these 4 groups (P ≤ 0.02). Longitudinal results substantiated these interindividual relations and further showed intraindividual increases in body fatness to be paralleled by urine pH decreases (P ≤ 0.0002). CONCLUSIONS Independent of underlying acid load, an early increase in body fatness is associated with increased free proton excretion, and thus with a decline in the kidney's acid excretion function, which could potentiate the risk of renal nephrolithiasis.
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Affiliation(s)
- Yifan Hua
- DONALD Study Center, Department of Nutritional Epidemiology, Institute of Nutrition and Food Science, University of Bonn, Dortmund, Germany
| | - Danika Krupp
- DONALD Study Center, Department of Nutritional Epidemiology, Institute of Nutrition and Food Science, University of Bonn, Dortmund, Germany
| | - Jonas Esche
- DONALD Study Center, Department of Nutritional Epidemiology, Institute of Nutrition and Food Science, University of Bonn, Dortmund, Germany
| | - Thomas Remer
- DONALD Study Center, Department of Nutritional Epidemiology, Institute of Nutrition and Food Science, University of Bonn, Dortmund, Germany
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