{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T12:49:49Z","timestamp":1793364589958,"version":"4.5.0"},"reference-count":20,"publisher":"Springer Science and Business Media LLC","issue":"9","license":[{"start":{"date-parts":[[2022,7,4]],"date-time":"2022-07-04T00:00:00Z","timestamp":1656892800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2022,7,4]],"date-time":"2022-07-04T00:00:00Z","timestamp":1656892800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Eur J Pediatr"],"DOI":"10.1007\/s00431-022-04551-3","type":"journal-article","created":{"date-parts":[[2022,7,4]],"date-time":"2022-07-04T19:02:32Z","timestamp":1656961352000},"page":"3339-3343","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Left renal vein entrapment in postural proteinuria: the diagnostic utility of the aortomesenteric angle"],"prefix":"10.1007","volume":"181","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8533-3781","authenticated-orcid":false,"given":"Nadide Basak","family":"Gulleroglu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1434-3824","authenticated-orcid":false,"given":"Kaan","family":"Gulleroglu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6733-8669","authenticated-orcid":false,"given":"Nihal","family":"Uslu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4361-8508","authenticated-orcid":false,"given":"Esra","family":"Baskin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,7,4]]},"reference":[{"key":"4551_CR1","doi-asserted-by":"publisher","unstructured":"Kovvuru K, Kanduri SR, Thongprayoon C, Cheungpasitporn (2020) Diagnostic approach to orthostatic proteinuria: a combination of urine micro-proteinuria with ultrasonography of the left renal vein. Ann Transl Med 8(12):779.\u00a0https:\/\/doi.org\/10.21037\/atm.2020.02.50","DOI":"10.21037\/atm.2020.02.50"},{"key":"4551_CR2","doi-asserted-by":"publisher","first-page":"48","DOI":"10.1159\/000512589","volume":"11","author":"C Pardinas","year":"2021","unstructured":"Pardinas C, do Carmo C, Gomes C, Escada L, Alves R (2021) Nutcracker syndrome: a single-center experience. Case Rep Nephrol Dial 11:48\u201354","journal-title":"Case Rep Nephrol Dial"},{"key":"4551_CR3","doi-asserted-by":"publisher","first-page":"557","DOI":"10.1016\/j.jbspin.2016.10.006","volume":"84","author":"JM Berthelot","year":"2017","unstructured":"Berthelot JM, Douane F, Maugars Y, Frampas E (2017) Nutcracker syndrome: a rare cause of left flank pain that can also manifest as unexplained pelvic pain. Joint Bone Spine 84:557\u2013562","journal-title":"Joint Bone Spine"},{"issue":"4","key":"4551_CR4","doi-asserted-by":"publisher","first-page":"277","DOI":"10.5527\/wjn.v3.i4.277","volume":"3","author":"K Gulleroglu","year":"2014","unstructured":"Gulleroglu K, Gulleroglu B, Baskin E (2014) Nutcracker syndrome. World J Nephrol 3(4):277\u2013281","journal-title":"World J Nephrol"},{"key":"4551_CR5","doi-asserted-by":"publisher","first-page":"101","DOI":"10.3390\/diagnostics11010101","volume":"11","author":"A Granata","year":"2021","unstructured":"Granata A, Distefano G, Sturiale A, Figuera M, Foti PV, Palmucci S, Basile A (2021) From Nutcracker phenomenon to Nutcracker syndrome: a pictorial review. Diagnostics 11:101. https:\/\/doi.org\/10.3390\/diagnostics11010101","journal-title":"Diagnostics"},{"issue":"5","key":"4551_CR6","doi-asserted-by":"publisher","first-page":"1140","DOI":"10.21037\/cdt-20-160","volume":"11","author":"MK Kolber","year":"2021","unstructured":"Kolber MK, Cui Z, Chen CK, Habibollahi P, Kalva SP (2021) Nutcracker syndrome: diagnosis and therapy. Cardiovasc Diagn Ther 11(5):1140\u20131149","journal-title":"Cardiovasc Diagn Ther"},{"key":"4551_CR7","doi-asserted-by":"publisher","unstructured":"Miro I, Serrano A, Perez-Ardavin J, March JA, Polo A, Conca MA, Sang\u00fcesa C, Veiga D, Carazo E, Dominguez C (2020) Eighteen years of experience with pediatric nutcracker syndrome: the importance of the conservative approach. J Pediatric Urology 16:218e1\u2013218e6.\u00a0https:\/\/doi.org\/10.1016\/j.jpurol.2019.12.003","DOI":"10.1016\/j.jpurol.2019.12.003"},{"key":"4551_CR8","doi-asserted-by":"publisher","DOI":"10.1155\/2017\/1746570","author":"K Orczyk","year":"2017","unstructured":"Orczyk K, Wysiadecki G, Majos A, Stefanczyk L, Topol M, Polguj M (2017) What each clinical anatomist has to know about left renal vein entrapment syndrome (Nutcracker syndrome): a review of the most important findings. BioMed Research International Article ID. https:\/\/doi.org\/10.1155\/2017\/1746570","journal-title":"BioMed Research International Article ID"},{"key":"4551_CR9","doi-asserted-by":"publisher","first-page":"84","DOI":"10.3339\/jkspn.2010.14.1.84","volume":"14","author":"JH Lee","year":"2010","unstructured":"Lee JH, Kim GJ (2010) Significant proteinuria caused by posterior Nutcracker phenomenon. J Korean Soc Pediatr Nephrol 14:84\u201388","journal-title":"J Korean Soc Pediatr Nephrol"},{"key":"4551_CR10","doi-asserted-by":"publisher","first-page":"886","DOI":"10.1016\/j.ejvs.2017.02.015","volume":"53","author":"K Ananthan","year":"2017","unstructured":"Ananthan K, Onida S, Davies AH (2017) Nutcracker syndrome: an update on current diagnostic criteria and management guidelines. Eur J Vasc Endovasc Surg 53:886\u2013894","journal-title":"Eur J Vasc Endovasc Surg"},{"issue":"12","key":"4551_CR11","doi-asserted-by":"publisher","first-page":"1627","DOI":"10.3348\/kjr.2019.0084","volume":"20","author":"SH Kim","year":"2019","unstructured":"Kim SH (2019) Doppler US and CT diagnosis of Nutcracker syndrome. Korean J Radiol 20(12):1627\u20131637","journal-title":"Korean J Radiol"},{"key":"4551_CR12","doi-asserted-by":"publisher","first-page":"686","DOI":"10.1016\/j.urology.2013.03.048","volume":"82","author":"D Alaygut","year":"2013","unstructured":"Alaygut D, Bayram M, Soylu A, Cakmakc\u0131 H, T\u00fcrkmen M, Kavukcu S (2013) Clinical course of children with Nutcracker syndrome. Urology 82:686\u2013690","journal-title":"Urology"},{"key":"4551_CR13","doi-asserted-by":"publisher","DOI":"10.1016\/j.pedsurg.2021.12.019","author":"J Meyer","year":"2021","unstructured":"Meyer J, Rother U, Stehr M, Meyer A (2021) Nutcracker syndrome in children: appearance, diagnostics, and treatment - a systematic review. J Pediatric Surgery. https:\/\/doi.org\/10.1016\/j.pedsurg.2021.12.019","journal-title":"J Pediatric Surgery"},{"key":"4551_CR14","doi-asserted-by":"publisher","first-page":"573","DOI":"10.7863\/jum.2007.26.5.573","volume":"26","author":"S Fitoz","year":"2007","unstructured":"Fitoz S, Ekim M, Ozcakar ZB, Elhan AH, Yalcinkaya F (2007) Nutcracker syndrome in children: the role of upright position examination and superior mesenteric artery angle measurement in the diagnosis. J Ultrasound Med 26:573\u2013578","journal-title":"J Ultrasound Med"},{"key":"4551_CR15","doi-asserted-by":"publisher","first-page":"1837","DOI":"10.1007\/s00467-008-0909-8","volume":"23","author":"M Ragazzi","year":"2008","unstructured":"Ragazzi M, Milani G, Edefonti A, Burdick L, Bianchetti MG, Fossali EF (2008) Left renal vein entrapment: a frequent feature in children with postural proteinuria. Pediatr Nephrol 23:1837\u20131839","journal-title":"Pediatr Nephrol"},{"key":"4551_CR16","doi-asserted-by":"publisher","first-page":"562","DOI":"10.1093\/ndt\/gfq444","volume":"26","author":"MBM Mazzani","year":"2011","unstructured":"Mazzani MBM, Kottanatu L, Simonetti GD, Ragazzi M, Bianchetti MG, Fossali EF, Milani GP (2011) Renal vein obstruction and orthostatic proteinuria: a review. Nephrol Dial Transplant 26:562\u2013565","journal-title":"Nephrol Dial Transplant"},{"key":"4551_CR17","doi-asserted-by":"publisher","first-page":"1935","DOI":"10.1007\/s00467-020-04586-4","volume":"35","author":"Z Arslan","year":"2020","unstructured":"Arslan Z, Koyun M, Erengin H, Akbas H, Kaya Aksoy G, Comak E, Akman S (2020) Orthostatic proteinuria: an overestimated phenomenon? Pediatric Nephrol 35:1935\u20131940","journal-title":"Pediatric Nephrol"},{"key":"4551_CR18","doi-asserted-by":"publisher","first-page":"332","DOI":"10.1111\/nep.12227","volume":"19","author":"M Jin","year":"2014","unstructured":"Jin M, Hu P, Ding R, Chen P, Qui Q, Wu J, Liu S, Xie Y, Chen X (2014) Effectiveness of supine\/standing urinanalysis for differential diagnosis of left renal vein entrapment syndrome combined with or without glomerulopathy. Nephrology 19:332\u2013338","journal-title":"Nephrology"},{"key":"4551_CR19","doi-asserted-by":"publisher","unstructured":"Guven S, Kalin S, Cicek N (2021) Diagnosis and treatment in children with Nutcracker syndrome: a single-center experience. Ac\u0131badem Universitesi Sa\u011fl\u0131k Bilimleri Dergisi 12(3):610\u2013615.\u00a0https:\/\/doi.org\/10.31067\/acusaglik.898335","DOI":"10.31067\/acusaglik.898335"},{"issue":"8","key":"4551_CR20","doi-asserted-by":"publisher","first-page":"214","DOI":"10.3390\/jcm7080214","volume":"7","author":"H Nalcacioglu","year":"2018","unstructured":"Nalcacioglu H, Bilgici MC, Tekcan D, Genc G, Bostanci Y, Yakupoglu YK, Sarikaya S, Ozkaya O (2018) Nutcracker syndrome in children: role of Doppler ultrasonographic indices in detecting the pattern of symptoms. J Clin Med 7(8):214. https:\/\/doi.org\/10.3390\/jcm7080214","journal-title":"J Clin Med"}],"container-title":["European Journal of Pediatrics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00431-022-04551-3.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00431-022-04551-3\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00431-022-04551-3.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,8,22]],"date-time":"2022-08-22T21:17:30Z","timestamp":1661203050000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00431-022-04551-3"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,7,4]]},"references-count":20,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2022,9]]}},"alternative-id":["4551"],"URL":"https:\/\/doi.org\/10.1007\/s00431-022-04551-3","relation":{},"ISSN":["1432-1076"],"issn-type":[{"value":"1432-1076","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,7,4]]},"assertion":[{"value":"6 January 2022","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"24 June 2022","order":2,"name":"revised","label":"Revised","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"27 June 2022","order":3,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"4 July 2022","order":4,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"This study was approved by Baskent University Institutional Review Board and Ethics Committee (Project no: KA09\/97).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval"}},{"value":"Voluntary written informed consents were obtained.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}},{"value":"Not applicable.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}}]}}