{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T17:58:14Z","timestamp":1790445494101,"version":"4.1.0"},"reference-count":29,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T00:00:00Z","timestamp":1790380800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"},{"start":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T00:00:00Z","timestamp":1790380800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["World J Urol"],"DOI":"10.1007\/s00345-026-06818-y","type":"journal-article","created":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T17:06:49Z","timestamp":1790442409000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Residual hydronephrosis after paediatric pyeloplasty: longitudinal APD reference curves"],"prefix":"10.1007","volume":"44","author":[{"given":"Jiayi","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning","family":"Sun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongcheng","family":"Song","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weiping","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,9,26]]},"reference":[{"key":"6818_CR1","doi-asserted-by":"publisher","unstructured":"Rai A, Hsieh A, Smith A (2022) Contemporary diagnosis and management of pelvi-ureteric junction obstruction. BJU Int 130:285\u2013290. https:\/\/doi.org\/10.1111\/bju.15689","DOI":"10.1111\/bju.15689"},{"key":"6818_CR2","doi-asserted-by":"publisher","unstructured":"O\u2019Reilly PH, Brooman PJC, Mak S et al (2001) The long-term results of Anderson-Hynes pyeloplasty. BJU Int 87:287\u2013289. https:\/\/doi.org\/10.1046\/j.1464-410x.2001.00108.x","DOI":"10.1046\/j.1464-410x.2001.00108.x"},{"key":"6818_CR3","doi-asserted-by":"publisher","unstructured":"Hsi RS, Holt SK, Gore JL, Lendvay TS, Harper JD (2015) National trends in follow-up imaging after pyeloplasty in children in the United States. J Urol 194:777\u2013782. https:\/\/doi.org\/10.1016\/j.juro.2015.03.123","DOI":"10.1016\/j.juro.2015.03.123"},{"key":"6818_CR4","doi-asserted-by":"publisher","unstructured":"Kumar M, Singh SK, Arora S, Mittal V, Patidar N, Sureka SK, Ansari MS (2016) Follow-up imaging after pediatric pyeloplasty. Indian J Urol 32:221\u2013226. https:\/\/doi.org\/10.4103\/0970-1591.185090","DOI":"10.4103\/0970-1591.185090"},{"key":"6818_CR5","doi-asserted-by":"publisher","unstructured":"Cost NG, Prieto JC, Wilcox DT (2010) Screening ultrasound in follow-up after pediatric pyeloplasty. Urology 76:175\u2013179. https:\/\/doi.org\/10.1016\/j.urology.2009.09.092","DOI":"10.1016\/j.urology.2009.09.092"},{"key":"6818_CR6","doi-asserted-by":"publisher","unstructured":"Almodhen F, Jednak R, Capolicchio JP, Eassa W, Brzezinski A, El-Sherbiny M (2010) Is routine renography required after pyeloplasty? J Urol 184:1128\u20131133. https:\/\/doi.org\/10.1016\/j.juro.2010.05.017","DOI":"10.1016\/j.juro.2010.05.017"},{"key":"6818_CR7","doi-asserted-by":"publisher","unstructured":"Park K, Baek M, Cho SY, Choi H (2013) Time course of hydronephrotic changes following unilateral pyeloplasty. J Pediatr Urol 9:779\u2013783. https:\/\/doi.org\/10.1016\/j.jpurol.2012.10.005","DOI":"10.1016\/j.jpurol.2012.10.005"},{"key":"6818_CR8","doi-asserted-by":"publisher","unstructured":"V\u00e4rel\u00e4 S, Omling E, B\u00f6rjesson A, Sal\u00f6 M (2021) Resolution of hydronephrosis after pyeloplasty in children. J Pediatr Urol 17:102.e1\u2013102.e7. https:\/\/doi.org\/10.1016\/j.jpurol.2020.10.031","DOI":"10.1016\/j.jpurol.2020.10.031"},{"key":"6818_CR9","doi-asserted-by":"publisher","unstructured":"Su\u00e1rez Arbel\u00e1ez MC, Nassau DE, Cabrera Valencia I, Blachman-Braun R, Alam A, Castellan M (2022) Ultrasonographic stabilization of hydronephrosis after pyeloplasty: key determinant of postoperative follow-up? J Pediatr Urol 18:662.e1\u2013662.e7. https:\/\/doi.org\/10.1016\/j.jpurol.2022.08.003","DOI":"10.1016\/j.jpurol.2022.08.003"},{"key":"6818_CR10","doi-asserted-by":"publisher","unstructured":"Romao RLP, Farhat WA, Pippi Salle JL, Braga LHP, Figueroa V, B\u00e4gli DJ, Koyle MA, Lorenzo AJ (2012) Early postoperative ultrasound after open pyeloplasty in children with prenatal hydronephrosis helps identify low risk of recurrent obstruction. J Urol 188:2347\u20132353. https:\/\/doi.org\/10.1016\/j.juro.2012.08.036","DOI":"10.1016\/j.juro.2012.08.036"},{"key":"6818_CR11","doi-asserted-by":"publisher","unstructured":"Rickard M, Braga LH, Oliveria JP, Romao R, Demaria J, Lorenzo AJ (2016) Percent improvement in renal pelvis antero-posterior diameter (PI-APD): prospective validation and further exploration of cut-off values that predict success after pediatric pyeloplasty supporting safe monitoring with ultrasound alone. J Pediatr Urol 12:228e1. https:\/\/doi.org\/10.1016\/j.jpurol.2016.04.003","DOI":"10.1016\/j.jpurol.2016.04.003"},{"key":"6818_CR12","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpurol.2026.105951","author":"Z Hornok","year":"2026","unstructured":"Hornok Z, Chandrasekharam VVS (2026) Utility of the 3-months post-operative ultrasound and percent reduction in antero-posterior diameter of renal pelvis to identify success, early failures and those at risk for late failures after pediatric dismembered pyeloplasty: an analysis of 359 cases. J Pediatr Urol. https:\/\/doi.org\/10.1016\/j.jpurol.2026.105951","journal-title":"J Pediatr Urol"},{"key":"6818_CR13","doi-asserted-by":"publisher","unstructured":"Psooy K, Pike JG, Leonard MP (2003) Long-term follow-up of pediatric dismembered pyeloplasty: how long is long enough? J Urol 169:1809\u20131812. https:\/\/doi.org\/10.1097\/01.ju.0000055040.19568.ea","DOI":"10.1097\/01.ju.0000055040.19568.ea"},{"key":"6818_CR14","doi-asserted-by":"publisher","unstructured":"van den Hoek J, de Jong A, Scheepe J, van der Toorn F, Wolffenbuttel K (2007) Prolonged follow-up after paediatric pyeloplasty: are repeat scans necessary? BJU Int 100:1150\u20131152. https:\/\/doi.org\/10.1111\/j.1464-410X.2007.07033.x","DOI":"10.1111\/j.1464-410X.2007.07033.x"},{"key":"6818_CR15","doi-asserted-by":"publisher","unstructured":"Bansal UK, Dangle PP, Stephany HA, Durrani A, Cannon G, Schneck FX, Ost MC (2017) Optimal length of follow-up for the detection of unsuccessful pediatric pyeloplasty: a single-center experience. Front Pediatr 5:126. https:\/\/doi.org\/10.3389\/fped.2017.00126","DOI":"10.3389\/fped.2017.00126"},{"key":"6818_CR16","doi-asserted-by":"publisher","unstructured":"Oktar T, Selvi I, D\u00f6nmez MI, Alan Y, De\u011firmenci E, Ziylan O (2024) What to expect on the long-term follow-up of pediatric pyeloplasty: critical time intervals and risk factors. J Pediatr Surg 59:1170\u20131176. https:\/\/doi.org\/10.1016\/j.jpedsurg.2023.11.021","DOI":"10.1016\/j.jpedsurg.2023.11.021"},{"key":"6818_CR17","doi-asserted-by":"publisher","unstructured":"Dy GW, Hsi RS, Holt SK, Lendvay TS, Gore JL, Harper JD (2016) National trends in secondary procedures following pediatric pyeloplasty. J Urol 195:1209\u20131214. https:\/\/doi.org\/10.1016\/j.juro.2015.11.010","DOI":"10.1016\/j.juro.2015.11.010"},{"key":"6818_CR18","doi-asserted-by":"publisher","unstructured":"von Elm E, Altman DG, Egger M, Pocock SJ, G\u00f8tzsche PC, Vandenbroucke JP, STROBE Initiative (2007) The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. Lancet 370:1453\u20131457. https:\/\/doi.org\/10.1016\/S0140-6736(07)61602-X","DOI":"10.1016\/S0140-6736(07)61602-X"},{"key":"6818_CR19","doi-asserted-by":"publisher","unstructured":"Li J, Yang Y, Li Z, Fan S, Wang X, Yang Z, Liu P, Song H, Zhang W (2022) Redo laparoscopic pyeloplasty for recurrent ureteropelvic junction obstruction: propensity score matched analyses of a high-volume center. Front Pediatr 10:997196. https:\/\/doi.org\/10.3389\/fped.2022.997196","DOI":"10.3389\/fped.2022.997196"},{"key":"6818_CR20","doi-asserted-by":"publisher","unstructured":"Sarhan O, Helmy T, Abou-El Ghar M, Baky MA, El-Assmy A, Dawaba M (2011) Long-term functional and morphological outcome after pyeloplasty for huge renal pelvis. BJU Int 107:829\u2013833. https:\/\/doi.org\/10.1111\/j.1464-410X.2010.09566.x","DOI":"10.1111\/j.1464-410X.2010.09566.x"},{"key":"6818_CR21","doi-asserted-by":"publisher","unstructured":"Panicker YC, San D, Vazhiyodan A, Narayanan SK, Ainippully AM (2024) Is percentage improvement in anteroposterior pelvic diameter a valuable marker for successful drainage postpyeloplasty in isolated pediatric pelvi-ureteric junction obstruction? J Indian Assoc Pediatr Surg 29:137\u2013142. https:\/\/doi.org\/10.4103\/jiaps.jiaps_227_23","DOI":"10.4103\/jiaps.jiaps_227_23"},{"key":"6818_CR22","doi-asserted-by":"publisher","unstructured":"Chung DY, Hong CH, Im YJ, Lee YS, Kim SW, Han SW (2015) Delayed redo pyeloplasty fails to recover lost renal function after failed pyeloplasty: early sonographic changes that correlate with a loss of differential renal function. Korean J Urol 56:157\u2013163. https:\/\/doi.org\/10.4111\/kju.2015.56.2.157","DOI":"10.4111\/kju.2015.56.2.157"},{"key":"6818_CR23","doi-asserted-by":"publisher","unstructured":"Helmy TE, Sarhan OM, Hafez AT, Elsherbiny MT, Dawaba ME, Ghali AM (2009) Surgical management of failed pyeloplasty in children: single-center experience. J Pediatr Urol 5:87\u201389. https:\/\/doi.org\/10.1016\/j.jpurol.2008.09.001","DOI":"10.1016\/j.jpurol.2008.09.001"},{"key":"6818_CR24","unstructured":"European Association of Urology (2026) EAU guidelines on paediatric urology. EAU Guidelines Office, Arnhem. https:\/\/uroweb.org\/guidelines\/paediatric-urology. Accessed 24 Aug 2026"},{"key":"6818_CR25","doi-asserted-by":"publisher","unstructured":"Faure A, London K, Smith GHH (2016) Early mercaptoacetyltriglycine (MAG-3) diuretic renography results after pyeloplasty. BJU Int 118:790\u2013796. https:\/\/doi.org\/10.1111\/bju.13512","DOI":"10.1111\/bju.13512"},{"key":"6818_CR26","doi-asserted-by":"publisher","unstructured":"Castagnetti M, Novara G, Beniamin F, Vezz\u00f9 B, Rigamonti W, Artibani W (2008) Scintigraphic renal function after unilateral pyeloplasty in children: a systematic review. BJU Int 102:862\u2013868. https:\/\/doi.org\/10.1111\/j.1464-410X.2008.07597.x","DOI":"10.1111\/j.1464-410X.2008.07597.x"},{"key":"6818_CR27","doi-asserted-by":"publisher","unstructured":"Song C, Park H, Park S, Moon KH, Kim KS (2007) The change in renal function in the supranormal hydronephrotic kidney after pyeloplasty. BJU Int 99:1483\u20131486. https:\/\/doi.org\/10.1111\/j.1464-410X.2007.06774.x","DOI":"10.1111\/j.1464-410X.2007.06774.x"},{"key":"6818_CR28","doi-asserted-by":"publisher","unstructured":"Okur \u00d6, Ucan AB, Can M, Boztas AE, \u015eencan A (2026) Long-term renal outcomes after pediatric pyeloplasty: defining optimal imaging intervals and predictors of functional recovery. J Pediatr Urol 22(3):105746. https:\/\/doi.org\/10.1016\/j.jpurol.2026.105746","DOI":"10.1016\/j.jpurol.2026.105746"},{"key":"6818_CR29","doi-asserted-by":"publisher","unstructured":"Soltan MA, Helmy TE, Dawaba ME, Abou El-Ghar M, Shokeir A (2026) Post-pubertal stability of split renal function after pyeloplasty performed in childhood. BJUI Compass 7(2):e70159. https:\/\/doi.org\/10.1002\/bco2.70159","DOI":"10.1002\/bco2.70159"}],"container-title":["World Journal of Urology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00345-026-06818-y.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00345-026-06818-y","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00345-026-06818-y.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T17:06:51Z","timestamp":1790442411000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00345-026-06818-y"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,26]]},"references-count":29,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2026,12]]}},"alternative-id":["6818"],"URL":"https:\/\/doi.org\/10.1007\/s00345-026-06818-y","relation":{},"ISSN":["1433-8726"],"issn-type":[{"value":"1433-8726","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,26]]},"assertion":[{"value":"24 August 2026","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"21 September 2026","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"26 September 2026","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"The authors declare no competing interests.","order":1,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The institutional ethical review board of Beijing Children\u2019s Hospital approved the study (No. 2019-k-12). The study was performed in accordance with the Declaration of Helsinki.","order":2,"name":"Ethics","label":"Ethical approval","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The requirement for individual informed consent was waived for this retrospective analysis.","order":3,"name":"Ethics","label":"Consent to participate","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable. No identifiable participant information or images are included.","order":4,"name":"Ethics","label":"Consent to publish","group":{"name":"EthicsHeading","label":"Declarations"}}],"article-number":"705"}}