{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T16:14:10Z","timestamp":1753892050915,"version":"3.41.2"},"reference-count":20,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,5,23]],"date-time":"2023-05-23T00:00:00Z","timestamp":1684800000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Pediatr."],"abstract":"<jats:p>Retroperitoneal extrarenal Wilms tumor is a rare condition in children that can be easily misdiagnosed as other retroperitoneal malignancies unrelated to the renal origin. Computerized tomography scan plays a crucial role in diagnosing and distinguishing retroperitoneal malignancies. In this report, we present two cases of retroperitoneal extrarenal Wilms tumor in children who were admitted due to abdominal mass. Laboratory examination did not reveal any significant abnormality. However, a computerized tomography scan revealed a solid or cystic-solid mass in the retroperitoneum accompanied by a bone spur extending from the anterior edge of the vertebral body to the back of the mass, while the origin of the tumor remained unclear. By analyzing these two cases and reviewing previous studies on retroperitoneal extrarenal Wilms tumor in children, we summarized the clinical and imaging characteristics of this rare condition. We also found that the presence of a spinal deformity adjacent to the mass might indicate the possibility of a retroperitoneal extrarenal Wilms tumor.<\/jats:p>","DOI":"10.3389\/fped.2023.1161603","type":"journal-article","created":{"date-parts":[[2023,5,23]],"date-time":"2023-05-23T05:10:39Z","timestamp":1684818639000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Case report: The CT features of pediatric retroperitoneal extrarenal Wilms tumor: a report of two cases and literature review"],"prefix":"10.3389","volume":"11","author":[{"given":"Ting","family":"Li","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haoru","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xin","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ling","family":"He","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1965","published-online":{"date-parts":[[2023,5,23]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"197","DOI":"10.1016\/j.urology.2018.12.024","article-title":"A case of primary paratesticular Wilms tumor in an undescended testis","volume":"129","author":"Groth","year":"2019","journal-title":"Urology"},{"key":"B2","doi-asserted-by":"publisher","first-page":"1709271","DOI":"10.1155\/2018\/1709271","article-title":"A Wilms\u2019 tumor with spinal cord compression: an extrarenal origin?","volume":"2018","author":"Petit","year":"2018","journal-title":"Case Rep Pediatr"},{"key":"B3","doi-asserted-by":"publisher","first-page":"E43","DOI":"10.1016\/j.jpurol.2012.03.005","article-title":"Rare localization of extrarenal nephroblastoma in 1-month-old female infant","volume":"8","author":"Armanda","year":"2012","journal-title":"J Pediatr Urol"},{"key":"B4","doi-asserted-by":"publisher","first-page":"E33","DOI":"10.1016\/j.jpedsurg.2013.04.021","article-title":"Extrarenal Wilms tumor: a case report and review of the literature","volume":"48","author":"Rojas","year":"2013","journal-title":"J Pediatr Surg"},{"key":"B5","doi-asserted-by":"publisher","first-page":"100898","DOI":"10.1016\/j.eucr.2019.100898","article-title":"Rare case of primary bladder Wilm\u2019s tumor in a 1-year old boy","volume":"25","author":"Ismy","year":"2019","journal-title":"Urol Case Rep"},{"key":"B6","doi-asserted-by":"publisher","first-page":"308","DOI":"10.1016\/j.urology.2009.01.006","article-title":"Presacral extrarenal Wilms tumor in a child","volume":"74","author":"Jia","year":"2009","journal-title":"Urology"},{"key":"B7","doi-asserted-by":"publisher","first-page":"617","DOI":"10.1007\/s004310100819","article-title":"Lumbosacral extrarenal Wilms\u2019 tumour: a case report and literature review","volume":"160","author":"Arda","year":"2001","journal-title":"Eur J Pediatr"},{"key":"B8","doi-asserted-by":"publisher","first-page":"591","DOI":"10.1007\/s00467-005-0002-5","article-title":"Extra-renal Wilms\u2019 tumour\u2013is it different?","volume":"21","author":"Sastri","year":"2006","journal-title":"Pediatr Nephrol"},{"key":"B9","doi-asserted-by":"publisher","first-page":"E8670","DOI":"10.1097\/MD.0000000000008670","article-title":"Extrarenal teratoma with nephroblastoma in the retroperitoneum: case report and literature review","volume":"96","author":"Li","year":"2017","journal-title":"Medicine"},{"key":"B10","doi-asserted-by":"publisher","first-page":"1081","DOI":"10.5858\/2001-125-1081-AEWTOI","article-title":"Adult extrarenal Wilms tumor occurring in the uterus","volume":"125","author":"Muc","year":"2001","journal-title":"Arch Pathol Lab Med"},{"key":"B11","doi-asserted-by":"publisher","first-page":"436","DOI":"10.1055\/s-2008-1063527","article-title":"Extrarenal Wilms\u2019 tumor","volume":"53","author":"Yunus","year":"2003","journal-title":"J Pak Med Assoc"},{"key":"B12","doi-asserted-by":"publisher","first-page":"922","DOI":"10.1016\/j.urology.2012.06.018","article-title":"Juxtarenal Wilms tumor in an adolescent","volume":"80","author":"Gordetsky","year":"2012","journal-title":"Urology"},{"key":"B13","doi-asserted-by":"publisher","first-page":"E19","DOI":"10.1016\/j.jpedsurg.2010.06.004","article-title":"Extrarenal Wilms tumor in children with unfavorable histology: a case report","volume":"45","author":"Taguchi","year":"2010","journal-title":"J Pediatr Surg"},{"key":"B14","doi-asserted-by":"publisher","first-page":"153","DOI":"10.5173\/ceju.2015.571","article-title":"Extrarenal nephroblastoma","volume":"68","author":"Apoznanski","year":"2015","journal-title":"Cent European J Urol"},{"key":"B15","doi-asserted-by":"publisher","first-page":"1826","DOI":"10.1016\/j.jpedsurg.2007.07.007","article-title":"Familial extrarenal Wilms tumor","volume":"42","author":"Houben","year":"2007","journal-title":"J Pediatr Surg"},{"key":"B16","doi-asserted-by":"publisher","first-page":"935","DOI":"10.1016\/s0022-3468(98)90678-9","article-title":"Association of extrarenal Wilms\u2019 tumor with a horseshoe kidney","volume":"33","author":"Kapur","year":"1998","journal-title":"J Pediatr Surg"},{"key":"B17","doi-asserted-by":"publisher","first-page":"E1","DOI":"10.1016\/j.wneu.2017.03.115","article-title":"The rare association of Spina Bifida and extrarenal Wilms tumor: a case report and review of the literature","volume":"104","author":"Igbaseimokumo","year":"2017","journal-title":"World Neurosurg"},{"key":"B18","doi-asserted-by":"publisher","first-page":"805","DOI":"10.1093\/ajcp\/93.6.805","article-title":"Extrarenal Wilms\u2019 tumor with cerebellar metastasis in a four-year-old girl with Spina Bifida","volume":"93","author":"Mirkin","year":"1990","journal-title":"Am J Clin Pathol"},{"key":"B19","doi-asserted-by":"publisher","first-page":"240","DOI":"10.1007\/s00381-004-0989-0","article-title":"Primary lumbosacral Wilms tumor associated with diastematomyelia and occult spinal dysraphism. A report of a rare case and a short review of literature","volume":"21","author":"Sharma","year":"2005","journal-title":"Childs Nerv Syst"},{"key":"B20","doi-asserted-by":"publisher","first-page":"1174","DOI":"10.1001\/archpedi.1979.02130110082015","article-title":"Extrarenal Wilms\u2019 tumor","volume":"133","author":"Mccauley","year":"1979","journal-title":"Am J Dis Child"}],"container-title":["Frontiers in Pediatrics"],"original-title":[],"link":[{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fped.2023.1161603\/full","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,5,23]],"date-time":"2023-05-23T05:10:42Z","timestamp":1684818642000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fped.2023.1161603\/full"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,5,23]]},"references-count":20,"alternative-id":["10.3389\/fped.2023.1161603"],"URL":"https:\/\/doi.org\/10.3389\/fped.2023.1161603","relation":{},"ISSN":["2296-2360"],"issn-type":[{"type":"electronic","value":"2296-2360"}],"subject":[],"published":{"date-parts":[[2023,5,23]]},"article-number":"1161603"}}