[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-56186-en":3,"doc-seo-56186-105":28,"detail-sidebar-cat-0-en-105":81},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":4,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":11,"language":21,"language_code":22,"site_id":23,"html_lang":22,"table_of_contents":24,"faqs":25,"seo_title":13,"seo_description":14,"update_tm":26,"read_time":27},56186,549758252649,"Ivy","https://ap-avatar.wpscdn.com/avatar/8000253669c5317157?_k=1778319167496531819",7,"Healthcare","Endoscopic Balloon Dilation of Primary Obstructive Megaureter—Is Fluoroscopic Guidance Necessary?","The study compares long-term effectiveness, complications, and clinical outcomes of primary obstructive megaureter (POM) treated with endoscopic balloon dilation (EBD) using fluoroscopic guidance versus performing the procedure without radiation exposure. Ninety-one retrospective cases were analyzed: fluoroscopic guidance (n=43) with retrograde pyelography and balloon dilation under imaging, versus no fluoroscopic guidance (n=48) using cystoscopic visualization only. Mean follow-up was 12.5 years and 6.4 years, respectively. Results showed no significant between-group differences in failure, complications, secondary VUR, re-stenosis, reimplantation, or final outcome. Long-term success rates were 86.5% and 89.6%.","World Journal of Urology (2023) 41:2861–2867  \n[https://doi.org/10.1007/s00345-023-04572-z](https://doi.org/10.1007/s00345-023-04572-z)  \nEndoscopic balloon dilation of primary obstructive megaureter:  \nis fluoroscopic guidance necessary?  \nRubén Ortiz1 · Laura Burgos1 · Beatriz Fernández‑Bautista1 · Alberto Parente1 · Javier Ordóñez1 · Jose María Angulo1  \nReceived: 26 March 2023 / Accepted: 8 August 2023 / Published online: 10 September 2023  \n© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023  \nAbstract  \nObjective To compare the long-term effectiveness, complications, and outcomes of primary obstructive megaureter (POM) treated by endoscopic balloon dilation under fluoroscopic guidance versus not using radioscopy during the procedure. Patients and methods A comparative study between POM cases treated at our institution by endoscopic balloon dilation (EBD) under fluoroscopic guidance (FG) (n = 43) vs no fluoroscopic guidance (NFG) (n = 48) between the years 2004 and 2018 was conducted. The procedure in FG consisted of performing a retrograde pyelography before dilation. Then, aguidewire is introduced to the renal pelvis, and the dilation of the vesicoureteral junction is performed using high-pressure balloon catheters under fluoroscopic vision. Finally, a double-J stent is placed between the renal pelvis and bladder. The procedure in NFG was performed exclusively under cystoscopic vision without radiological exposure. Complications, outcomes, and success rates were analyzed using Spearman’s correlation test. Mean follow-up was 12.5 ± 2.2 years in FG and 6.4 ± 1.3 years in NFG.  \nResults MAG-3 showed significant differences in renal drainage before and after endoscopic treatment in both groups (p \u003C 0.001 T-test). Statistical analysis did not reveal differences between groups in initial technical failure (r: − 0.035, p = 0.74), early postoperative complications (r: − 0.029, p = 0.79), secondary VUR (r: 0.033, p = 0.76), re-stenosis (r: 0.022, p = 0.84), long-term ureteral reimplantation (r: 0.065, p = 0.55), and final outcome (r: − 0.054, p = 0.61) . The endoscopic approach of POM had a long-term success rate of 86.5% in FG VS 89.6% in NFG.  \nConclusions Endoscopic balloon dilation of POM can be done with no radiation exposure with similar results, effectiveness, and outcomes.  \nKeywords Endoscopic balloon dilation · High-pressure balloon dilation · Endourological treatment · Primary obstructive megaureter · Outcome · Uretero-hydronephrosis  \nIntroduction  \nThe primary obstructive megaureter (POM) resolves spontaneously in most cases during the first months of life, and only a minority of patients will need surgical treatment [1, 2] . The adequate treatment of POM has become controversial during the last decade, regarding the outcomes of the endoscopic approach with high-pressure balloon dilation compared with the traditional procedure. Ureteral  \n* Rubén Ortiz [rubenortizrodriguez@hotmail.com](rubenortizrodriguez@hotmail.com)  \n1 Pediatric Urology Division, Department of Pediatric Surgery, Hospital Universitario Gregorio Marañón, Madrid, Spain  \nreimplantation has been considered the gold-standard procedure for these patients, but reimplantation of a grossly dilated ureter in a small infant bladder entails difficulty and potential complications [3, 4] .  \nEndoscopic treatment of POM with high-pressure balloon dilation has shown to be a valid technique with good results and outcomes, close to the ureteral reimplantation. Several authors support that these results remain in the long term with a low complication rate, which makes endoscopic balloon dilation a very attractive option for the surgical management of POM even in small infants [5–7] .  \nHowever, a relevant issue is the associated ionizing radiation during this technique since the potential hazards of radio-induced side effects are especially relevant in the pediatric population [8]. Endoscopic balloon dilation (EBD)","cbCaimxCpxICML0B","https://ap.wps.com/l/cbCaimxCpxICML0B","pdf",703838,1,"English","en",105,"# Introduction\n# Patients and methods\n# Results\n# Conclusions","[{\"question\":\"What were the main findings regarding success and complications?\",\"answer\":\"MAG-3 showed significant drainage differences before and after treatment in both groups. Statistical tests found no significant between-group differences in technical failure, early complications, secondary VUR, re-stenosis, long-term reimplantation, or final outcomes. Long-term success was 86.5% with fluoroscopy versus 89.6% without.\"}]",1783718783,18,{"code":4,"msg":29,"data":30},"ok",{"site_id":23,"language":22,"slug":31,"title":13,"keywords":32,"description":14,"schema_data":33,"social_meta":76,"head_meta":78,"extra_data":80,"updated_unix":26},"endoscopic-balloon-dilation-of-primary-obstructive-megaureteris-fluoroscopic-guidance-necessary","",{"@graph":34,"@context":75},[35,52,66],{"@type":36,"itemListElement":37},"BreadcrumbList",[38,42,46,49],{"item":39,"name":40,"@type":41,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":43,"name":44,"@type":41,"position":45},"https://docshare.wps.com/document/","Document",2,{"item":47,"name":12,"@type":41,"position":48},"https://docshare.wps.com/document/healthcare/",3,{"item":50,"name":13,"@type":41,"position":51},"https://docshare.wps.com/document/endoscopic-balloon-dilation-of-primary-obstructive-megaureteris-fluoroscopic-guidance-necessary/56186/",4,{"url":50,"name":13,"@type":53,"author":54,"headline":13,"publisher":56,"fileFormat":59,"inLanguage":22,"description":14,"dateModified":60,"datePublished":60,"encodingFormat":59,"isAccessibleForFree":61,"interactionStatistic":62},"DigitalDocument",{"name":9,"@type":55},"Person",{"url":39,"name":57,"@type":58},"DocShare","Organization","application/pdf","2026-07-10",true,{"@type":63,"interactionType":64,"userInteractionCount":4},"InteractionCounter",{"@type":65},"ViewAction",{"@type":67,"mainEntity":68},"FAQPage",[69],{"name":70,"@type":71,"acceptedAnswer":72},"What were the main findings regarding success and complications?","Question",{"text":73,"@type":74},"MAG-3 showed significant drainage differences before and after treatment in both groups. Statistical tests found no significant between-group differences in technical failure, early complications, secondary VUR, re-stenosis, long-term reimplantation, or final outcomes. Long-term success was 86.5% with fluoroscopy versus 89.6% without.","Answer","https://schema.org",{"og:url":50,"og:type":77,"og:title":13,"og:site_name":57,"og:description":14},"article",{"robots":79,"canonical":50},"index,follow",{"doc_id":7,"site_id":23},{"code":4,"msg":5,"data":82},[83,87,91,95,100,105,108,113,118,121,125],{"id":20,"doc_module":4,"doc_module_name":44,"category_name":84,"show_sort_weight":85,"slug":86},"Story & Novel",90,"story-novel",{"id":45,"doc_module":4,"doc_module_name":44,"category_name":88,"show_sort_weight":89,"slug":90},"Literature",80,"literature",{"id":51,"doc_module":4,"doc_module_name":44,"category_name":92,"show_sort_weight":93,"slug":94},"Exam",70,"exam",{"id":96,"doc_module":4,"doc_module_name":44,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":44,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":11,"doc_module":4,"doc_module_name":44,"category_name":12,"show_sort_weight":106,"slug":107},40,"healthcare",{"id":109,"doc_module":4,"doc_module_name":44,"category_name":110,"show_sort_weight":111,"slug":112},8,"Research & Report",30,"research-report",{"id":114,"doc_module":4,"doc_module_name":44,"category_name":115,"show_sort_weight":116,"slug":117},9,"Religion & Spirituality",20,"religion-spirituality",{"id":116,"doc_module":4,"doc_module_name":44,"category_name":119,"show_sort_weight":116,"slug":120},"World Cup","world-cup",{"id":122,"doc_module":4,"doc_module_name":44,"category_name":123,"show_sort_weight":122,"slug":124},10,"Lifestyle","lifestyle",{"id":126,"doc_module":4,"doc_module_name":44,"category_name":127,"show_sort_weight":96,"slug":128},19,"General","general"]