{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T16:40:37Z","timestamp":1787071237849,"version":"build-2736575974"},"reference-count":15,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","license":[{"start":{"date-parts":[[2025,11,18]],"date-time":"2025-11-18T00:00:00Z","timestamp":1763424000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:title>\n                    A\n                    <jats:sc>BSTRACT<\/jats:sc>\n                  <\/jats:title>\n                  <jats:p>This study aims to discuss the role of dynamic renal scintigraphy (DRS) in diagnosing congenital midureteral stricture (CMUS) as a rare and challenging condition in children, often confused with ureteropelvic junction obstruction (UPJO), leading to inadequate management. We retrospectively analyzed DRS data from 133 cases of hydronephrosis from 2015 to 2023, including 3 CMUS and 15 UPJO by Crossing Vessels (CV). Preoperative protocol involved ultrasound and DRS. We adhered to the paediatric protocol of the European Association of Nuclear Medicine, only radiotracer selection depended on availability. Surgery was indicated based on symptoms, obstruction on DRS, and reduced renal function. Ureteral stricture was considered congenital if no extrinsic compression was found. We excluded non operated patients and those with missing data. Proximal ureteral retention on DRS was observed in one case with complete stricture in lumbar ureter (case1), absent in a case with ipsilateral UPJO (case 2), and equivocal findings were noted with incomplete stricture in the pelvic ureter (case 3). Ureteral stasis was consistently absent in all 130 cases of PUJO including 15 cas of CV. CMUS diagnosis was confirmed intraoperatively in all 3 cases. Lumbotomy allowed surgical access in 2 cases but was unsuitable in one. Outcomes were favorable in 3 patients. Often requested for hydronephrosis, DRS can provide additional information suggesting CMUS. However, ureteral retention on DRS may not always be present, particularly in cases of incomplete stenosis or associated uropathies.<\/jats:p>","DOI":"10.4103\/jiaps.jiaps_168_25","type":"journal-article","created":{"date-parts":[[2025,11,19]],"date-time":"2025-11-19T10:00:09Z","timestamp":1763546409000},"page":"270-274","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Value of Dynamic Renal Scintigraphy in Suggesting Congenital Midureteral Stricture: A Case Series and Literature Review"],"prefix":"10.4103","volume":"31","author":[{"given":"Mohamed Oulad","family":"Saiad","sequence":"first","affiliation":[{"name":"Department of General Pediatric Surgery, Mother and Child Unit, School of Medicine, Mohammed VI University Hospital, Cadi Ayyad University, Marrakesh, Morocco"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Driss","family":"Tahiri","sequence":"additional","affiliation":[{"name":"Department of General Pediatric Surgery, Mother and Child Unit, School of Medicine, Mohammed VI University Hospital, Cadi Ayyad University, Marrakesh, Morocco"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2025,11,18]]},"reference":[{"key":"R1-20260311","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1186\/s12894-021-00916-2","article-title":"Congenital midureteral stenosis in children: A 13-year retrospective study based on data from a large pediatric medical center","volume":"21","author":"Meng","year":"2021","journal-title":"BMC Urol"},{"key":"R2-20260311","doi-asserted-by":"crossref","first-page":"196","DOI":"10.1016\/S0022-5347(17)61699-9","article-title":"Congenital ureteral strictures","volume":"104","author":"Allen","year":"1970","journal-title":"J Urol"},{"key":"R3-20260311","doi-asserted-by":"crossref","first-page":"742","DOI":"10.1016\/S0022-5347(17)56113-3","article-title":"Valves of the ureter as a cause of primary obstruction of the ureter: Anatomic, embryologic and clinical aspects","volume":"123","author":"Maizels","year":"1980","journal-title":"J Urol"},{"key":"R4-20260311","doi-asserted-by":"crossref","first-page":"1999","DOI":"10.1097\/01.ju.0000176462.56473.0c","article-title":"Congenital mid ureteral strictures","volume":"174","author":"Hwang","year":"2005","journal-title":"J Urol"},{"key":"R5-20260311","doi-asserted-by":"crossref","first-page":"513","DOI":"10.1007\/s00383-009-2368-0","article-title":"Congenital ureteric stenosis: A study of 17 children","volume":"25","author":"Kannaiyan","year":"2009","journal-title":"Pediatr Surg Int"},{"key":"R6-20260311","doi-asserted-by":"crossref","first-page":"1556","DOI":"10.1016\/j.jacr.2021.07.011","article-title":"Diuretic renal scintigraphy: The state of practice and a potential opportunity for standardization","volume":"18","author":"Banks","year":"2021","journal-title":"J Am Coll Radiol"},{"key":"R7-20260311","doi-asserted-by":"crossref","first-page":"1175","DOI":"10.1007\/s00259-011-1811-3","article-title":"Auspices of Paediatric Committee of European Association of Nuclear Medicine. Guidelines for standard and diuretic renogram in children","volume":"38","author":"Gordon","year":"2011","journal-title":"Eur J Nucl Med Mol Imaging"},{"key":"R8-20260311","first-page":"36","article-title":"Diuresis renography for differentiation of upper urinary tract dilatation from obstruction: F+20 and F-15 methods","volume":"4","author":"Taghavi","year":"2007","journal-title":"Urol J"},{"key":"R9-20260311","doi-asserted-by":"crossref","first-page":"1636","DOI":"10.2967\/jnumed.118.215921","article-title":"The SNMMI and EANM procedural guidelines for diuresis renography in infants and children","volume":"59","author":"Majd","year":"2018","journal-title":"J Nucl Med"},{"key":"R10-20260311","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1016\/j.jpurol.2012.07.005","article-title":"Lower pole vessels in children with pelviureteric junction obstruction: Laparoscopic vascular hitch or dismembered pyeloplasty?","volume":"9","author":"Schneider","year":"2013","journal-title":"J Pediatr Urol"},{"key":"R11-20260311","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1046\/j.1464-410X.2003.04265.x","article-title":"Pelvi-ureteric junction obstruction by crossing renal vessels: Clinical and imaging features","volume":"92","author":"Rigas","year":"2003","journal-title":"BJU Int"},{"key":"R12-20260311","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1089\/lap.2016.0222","article-title":"Laparoscopic resection and end-to-end ureteroureterostomy for midureteral obstruction in children","volume":"27","author":"Lu","year":"2017","journal-title":"J Laparoendosc Adv Surg Tech A"},{"key":"R13-20260311","first-page":"969246","article-title":"Congenital midureteric stricture: Challenges in diagnosis and management","author":"Hamid","year":"2015","journal-title":"Case Rep Urol, 2015"},{"key":"R14-20260311","doi-asserted-by":"crossref","first-page":"566","DOI":"10.1007\/s00383-005-1455-0","article-title":"Congenital ureteric strictures: An uncommon cause of antenatally detected hydronephrosis","volume":"21","author":"Cauchi","year":"2005","journal-title":"Pediatr Surg Int"},{"key":"R15-20260311","doi-asserted-by":"crossref","first-page":"1909","DOI":"10.1016\/j.jpedsurg.2015.07.013","article-title":"Laparoscopic repair of congenital midureteric strictures in infants and children","volume":"50","author":"Chandrasekharam","year":"2015","journal-title":"J Pediatr Surg"}],"container-title":["Journal of Indian Association of Pediatric Surgeons"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.4103\/jiaps.jiaps_168_25","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T15:43:30Z","timestamp":1787067810000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.4103\/jiaps.jiaps_168_25"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,11,18]]},"references-count":15,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2026]]}},"URL":"https:\/\/doi.org\/10.4103\/jiaps.jiaps_168_25","relation":{},"ISSN":["0971-9261","1998-3891"],"issn-type":[{"value":"0971-9261","type":"print"},{"value":"1998-3891","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,11,18]]},"assertion":[{"value":"2025-05-30","name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-08-21","name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}}]}}