{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T11:36:31Z","timestamp":1773315391825,"version":"3.50.1"},"reference-count":4,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2020,9,1]],"date-time":"2020-09-01T00:00:00Z","timestamp":1598918400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Endourology Case Reports"],"published-print":{"date-parts":[[2020,9,1]]},"abstract":"<jats:sec>\n                    <jats:title>Introduction:<\/jats:title>\n                    <jats:p>Congenital ureteral valves are a rare cause of ureteral obstruction that may lead to renal function deterioration. We present two clinical cases treated endoscopically by monopolar electrocautery and laser fiber ablation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Presentation of Case:<\/jats:title>\n                    <jats:p>The first case is a 13-year-old male with several episodes of abdominal pain and was found to have severe left hydronephrosis. Ultrasonography showed a dilated ureter and pelvicaliceal system with an obstructive renogram curve. We performed a retrograde pyelogram, finding a dilated ureter 5\u2009cm up from the vesicoureteral junction with ureteral valves in that place. Ablation of the valves was conducted using monopolar electrocautery. The second case is a 2-year-old male with left ureterohydronephrosis shown in abdominal ultrasonography. In the radiologic findings, a high-risk pyelocaliceal dilatation with renal parenchyma thinning and a diameter of 3.3\u2009cm for the left ureter is described, with an obstructive renogram. We performed a cystoscopy, observing the presence of valves in the ureter at 3\u2009cm that conditioned an obstruction. The complete section of the valves was performed through a 270\u03bcm holmium laser fiber. Our patients made an uneventful postoperative recovery and continue to remain completely asymptomatic. A significant decrease in renal dilation was observed and renal function recovered in both cases.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Ureteral valves are an uncommon cause of ureteral obstruction. Advances in endourologic techniques allow us to give a minimally invasive approach to these diseases, obtaining good long-term results in our small series of patients.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1089\/cren.2019.0186","type":"journal-article","created":{"date-parts":[[2020,6,18]],"date-time":"2020-06-18T11:04:26Z","timestamp":1592478266000},"page":"213-216","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Endourologic Treatment in Two Cases of Ureteral Valves"],"prefix":"10.1177","volume":"6","author":[{"given":"Beatriz","family":"Fern\u00e1ndez-Bautista","sequence":"first","affiliation":[{"name":"Pediatric Urology, Gregorio Mara\u00f1\u00f3n University Hospital, Madrid, Spain."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jose Mar\u00eda","family":"Angulo","sequence":"additional","affiliation":[{"name":"Pediatric Urology, Gregorio Mara\u00f1\u00f3n University Hospital, Madrid, Spain."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rub\u00e9n","family":"Ortiz","sequence":"additional","affiliation":[{"name":"Pediatric Urology, Gregorio Mara\u00f1\u00f3n University Hospital, Madrid, Spain."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laura","family":"Burgos","sequence":"additional","affiliation":[{"name":"Pediatric Urology, Gregorio Mara\u00f1\u00f3n University Hospital, Madrid, Spain."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Javier","family":"Ord\u00f3\u00f1ez","sequence":"additional","affiliation":[{"name":"Pediatric Urology, Gregorio Mara\u00f1\u00f3n University Hospital, Madrid, Spain."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alberto","family":"Parente","sequence":"additional","affiliation":[{"name":"Pediatric Urology, Gregorio Mara\u00f1\u00f3n University Hospital, Madrid, Spain."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2020,9,17]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1016\/S0090-4295(98)00063-6","article-title":"Ureteral valves in children","volume":"51","author":"Rabinowitz R","year":"1998","unstructured":"Rabinowitz R, , Kingston TE, , Wesselhoeft C, , Caldamone AA. Ureteral valves in children. Urology, 1998; 51(5A Suppl):7\u201311.","journal-title":"Urology"},{"key":"e_1_3_3_3_2","doi-asserted-by":"crossref","first-page":"237","DOI":"10.1016\/0090-4295(83)90076-6","article-title":"Congenital ureteral valves in children","volume":"21","author":"Gosalbez R","year":"1983","unstructured":"Gosalbez R, , Garat JM, , Piro C, , Martin JA, , Cortes F. Congenital ureteral valves in children. Urology, 1983; 21:237\u2013241.","journal-title":"Urology"},{"key":"e_1_3_3_4_2","doi-asserted-by":"crossref","first-page":"344","DOI":"10.1016\/j.jpurol.2007.02.002","article-title":"Congenital ureteral valves: Two new cases and a review of the literature","volume":"3","author":"Rossi E","year":"2007","unstructured":"Rossi E, , Salas JR, , Aucatoma FC, , Munoz MO, , Fochs LM. Congenital ureteral valves: Two new cases and a review of the literature. J Pediatr Urol, 2007; 3:344\u2013349.","journal-title":"J Pediatr Urol"},{"key":"e_1_3_3_5_2","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.anpedi.2013.04.021","article-title":"[Ureteral valves: Literature review and description of 4 new cases]","volume":"80","author":"Montoya-Chinchilla R","year":"2014","unstructured":"Montoya-Chinchilla R, , Guirao-Pinera MJ, , Nortes-Cano L. [Ureteral valves: Literature review and description of 4 new cases]. An Pediatr (Barc), 2014; 80:51\u201354.","journal-title":"An Pediatr (Barc)"}],"container-title":["Journal of Endourology Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1089\/cren.2019.0186","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/cren.2019.0186","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/cren.2019.0186","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T17:25:29Z","timestamp":1773249929000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1089\/cren.2019.0186"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,9,1]]},"references-count":4,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2020,9,1]]}},"alternative-id":["10.1089\/cren.2019.0186"],"URL":"https:\/\/doi.org\/10.1089\/cren.2019.0186","relation":{},"ISSN":["2379-9889","2379-9889"],"issn-type":[{"value":"2379-9889","type":"print"},{"value":"2379-9889","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,9,1]]}}}