{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T15:20:24Z","timestamp":1786980024223,"version":"build-2736575974"},"reference-count":9,"publisher":"Springer Science and Business Media LLC","issue":"6","license":[{"start":{"date-parts":[[2020,8,25]],"date-time":"2020-08-25T00:00:00Z","timestamp":1598313600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2020,8,25]],"date-time":"2020-08-25T00:00:00Z","timestamp":1598313600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"The Special Fund of the Pediatric Medical Coordinated Development Center of Beijing Hospitals Authority","award":["XTZD20180303"],"award-info":[{"award-number":["XTZD20180303"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["World J Urol"],"published-print":{"date-parts":[[2021,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To describe our experience in handling cases of children with fibroepithelial polyps (FEPs) of ureters. We specifically present preoperative diagnosis approaches, provide a clear definition of this entity and its outcomes following treatment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>Clinical data of children with FEPs who were consecutively treated at Beijing Children's Hospital from January 2006 to May 2019 were retrospectively analyzed in this study. The clinical data reviewed included diagnostic, intraoperative, and follow-up data.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Of the 2653 children with surgery for hydronephrosis reviewed, 48 (1.8%) cases of FEPs of the ureters were identified, with a mean age of 109\u2009\u00b1\u200934.7\u00a0months. Among them, males accounted for 95.8%, left side for 81.3%, and proximal ureteral polyps for 97.9%. Notably, 70.8% of patients had only 1 polyp and the median size of the polyps was 2.1\u2009\u00b1\u20091.8\u00a0cm. All patients underwent ultrasound before surgery, which revealed the existence of polyps in 29 (60.4%) children. These polyps were completely resected surgically. The mean follow-up was 82\u00a0months (range of 6\u2013153\u00a0months) and no cases of recurrences of polyps were seen after surgery during follow-up. The rate of other long-term complications was 9.3%.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>In conclusion, FEPs are one of the important causes of hydronephrosis in children. Ultrasound is effective for preoperative diagnosis achieving higher true positive rates than other diagnostic methods. Although the recurrence rate of polyps and symptoms are low after complete resection in children, long-term follow-up is advocated to the adolescence stage to monitor the incidences of urinary tract infections, ureteropelvic junction obstruction and stone formation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00345-020-03379-6","type":"journal-article","created":{"date-parts":[[2020,8,25]],"date-time":"2020-08-25T14:04:06Z","timestamp":1598364246000},"page":"2239-2243","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Preoperative diagnosis, treatment, and outcomes of FEPs of ureters in children: a 13-year retrospective study based on data at a large pediatric medical center"],"prefix":"10.1007","volume":"39","author":[{"given":"Meng","family":"He","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6925-2925","authenticated-orcid":false,"given":"Ning","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weiping","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhentao","family":"Ren","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,8,25]]},"reference":[{"issue":"1","key":"3379_CR1","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1007\/s11255-009-9567-4","volume":"42","author":"C Kara","year":"2010","unstructured":"Kara C, Resorlu B, Oguz U, Unsal A (2010) Incidentally detected ureteral fibroepithelial polyps in children: is endoscopic treatment of them really necessary? Int Urol Nephrol. 42(1):1\u20135. https:\/\/doi.org\/10.1007\/s11255-009-9567-4","journal-title":"Int Urol Nephrol."},{"issue":"5","key":"3379_CR2","doi-asserted-by":"publisher","first-page":"1834","DOI":"10.1097\/01.ju.0000061966.21966.94","volume":"169","author":"GS Adey","year":"2003","unstructured":"Adey GS, Vargas SO, Retik AB, Borer JG, Mandell J, Hendren WH et al (2003) Fibroepithelial polyps causing ureteropelvic junction obstruction in children. J Urol. 169(5):1834\u20136. https:\/\/doi.org\/10.1097\/01.ju.0000061966.21966.94","journal-title":"J Urol."},{"issue":"5","key":"3379_CR3","doi-asserted-by":"publisher","first-page":"251","DOI":"10.1016\/j.jpurol.2015.02.019","volume":"11","author":"LN Dai","year":"2015","unstructured":"Dai LN, Chen CD, Lin XK, Wang YB, Xia LG, Liu P et al (2015) Retroperitoneal laparoscopy management for ureteral fibroepithelial polyps causing hydronephrosis in children: a report of five cases. J Pediatr Urol. 11(5):251\u20137. https:\/\/doi.org\/10.1016\/j.jpurol.2015.02.019","journal-title":"J Pediatr Urol."},{"issue":"9","key":"3379_CR4","doi-asserted-by":"publisher","first-page":"1107","DOI":"10.1007\/s00247-012-2404-4","volume":"42","author":"XM Wang","year":"2012","unstructured":"Wang XM, Jia LQ, Wang Y, Wang N (2012) Utilizing ultrasonography in the diagnosis of pediatric fibroepithelial polyps causing ureteropelvic junction obstruction. Pediatr Radiol. 42(9):1107\u201311. https:\/\/doi.org\/10.1007\/s00247-012-2404-4","journal-title":"Pediatr Radiol."},{"issue":"2","key":"3379_CR5","doi-asserted-by":"publisher","first-page":"217","DOI":"10.1007\/s00261-001-0066-z","volume":"27","author":"TR Williams","year":"2002","unstructured":"Williams TR, Wagner BJ, Corse WR, Vestevich JC (2002) Fibroepithelial polyps of the urinary tract. Abdom Imaging. 27(2):217\u201321. https:\/\/doi.org\/10.1007\/s00261-001-0066-z","journal-title":"Abdom Imaging."},{"issue":"3","key":"3379_CR6","doi-asserted-by":"publisher","first-page":"240","DOI":"10.1016\/j.jpurol.2019.02.001","volume":"15","author":"R Babu","year":"2019","unstructured":"Babu R, Vittalraj P, Sundaram S, Shalini S (2019) Pathological changes in ureterovesical and ureteropelvic junction obstruction explained by fetal ureter histology. J Pediatr Urol. 15(3):240\u20131. https:\/\/doi.org\/10.1016\/j.jpurol.2019.02.001","journal-title":"J Pediatr Urol."},{"issue":"4","key":"3379_CR7","doi-asserted-by":"publisher","first-page":"323","DOI":"10.1007\/s00383-007-1884-z","volume":"23","author":"ZB Niu","year":"2007","unstructured":"Niu ZB, Yang Y, Hou Y, Chen H, Wang CL (2007) Ureteral polyps: an etiological factor of hydronephrosis in children that should not be ignored. Pediatr Surg Int. 23(4):323\u20136. https:\/\/doi.org\/10.1007\/s00383-007-1884-z","journal-title":"Pediatr Surg Int."},{"issue":"9\u201310","key":"3379_CR8","doi-asserted-by":"publisher","first-page":"E631","DOI":"10.5489\/cuaj.2878","volume":"9","author":"DJ Ludwig","year":"2015","unstructured":"Ludwig DJ, Buddingh KT, Kums JJ, Kropman RF, Roshani H, Hirdes WH (2015) Treatment and outcome of fibroepithelial ureteral polyps: A systematic literature review. Can Urol Assoc J. 9(9\u201310):E631\u20137. https:\/\/doi.org\/10.5489\/cuaj.2878","journal-title":"Can Urol Assoc J."},{"issue":"1","key":"3379_CR9","doi-asserted-by":"publisher","first-page":"21","DOI":"10.1016\/j.jpurol.2014.08.004","volume":"11","author":"R Li","year":"2015","unstructured":"Li R, Lightfoot M, Alsyouf M, Nicolay L, Baldwin DD, Chamberlin DA (2015) Diagnosis and management of ureteral fibroepithelial polyps in children: a new treatment algorithm. J Pediatr Urol. 11(1):21\u20132. https:\/\/doi.org\/10.1016\/j.jpurol.2014.08.004","journal-title":"J Pediatr Urol."}],"container-title":["World Journal of Urology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00345-020-03379-6.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00345-020-03379-6\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00345-020-03379-6.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,8,24]],"date-time":"2021-08-24T19:34:47Z","timestamp":1629833687000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00345-020-03379-6"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,8,25]]},"references-count":9,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2021,6]]}},"alternative-id":["3379"],"URL":"https:\/\/doi.org\/10.1007\/s00345-020-03379-6","relation":{},"ISSN":["0724-4983","1433-8726"],"issn-type":[{"value":"0724-4983","type":"print"},{"value":"1433-8726","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,8,25]]},"assertion":[{"value":"24 February 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"20 July 2020","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"25 August 2020","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standard"}},{"value":"None of the contributing authors have any conflict of interest, including specific financial interests or relationships and affiliations relevant to the subject matter or materials discussed in the manuscript.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}}]}}