{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T18:48:45Z","timestamp":1787683725233,"version":"build-2784847793"},"reference-count":9,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2020,12,23]],"date-time":"2020-12-23T00:00:00Z","timestamp":1608681600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81872107"],"award-info":[{"award-number":["81872107"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81872108"],"award-info":[{"award-number":["81872108"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Int J Surg Pathol"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:p>Liposarcoma is the most common soft tissue malignancy and usually occurs in the retroperitoneum or the extremities but rarely in the kidney. In this article, we report a case of a 71-year-old female patient who presented with abdominal lump and left flank pain for 1 month. An abdominal contrast-enhanced computed tomography scan demonstrated a 12 cm \u00d7 7 cm solid mass arising from the upper pole of left kidney and another 8 cm \u00d7 6 cm low-density retroperitoneal mass with fat density. Radical nephrectomy of the left kidney and resection of the retroperitoneal mass were performed. Surprisingly, pathological examination revealed a high-grade sarcoma (with minor lipomatous component) in the left kidney and a retroperitoneal well-differentiated liposarcoma. MDM2 gene amplification was identified by fluorescence in situ hybridization in both tumors, supporting final diagnosis of dedifferentiated liposarcoma of the kidney and well-differentiated liposarcoma of the retroperitoneum.<\/jats:p>","DOI":"10.1177\/1066896920981682","type":"journal-article","created":{"date-parts":[[2020,12,23]],"date-time":"2020-12-23T05:52:15Z","timestamp":1608702735000},"page":"667-671","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Synchronous Renal Dedifferentiated Liposarcoma and Retroperitoneal Well-Differentiated Liposarcoma: A Case Report With Literature Review"],"prefix":"10.1177","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7878-2001","authenticated-orcid":false,"given":"Ling","family":"Nie","sequence":"first","affiliation":[{"name":"Department of Pathology, West China Hospital, West China Medical School, Sichuan University, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xueqin","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Pathology, West China Hospital, West China Medical School, Sichuan University, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Gong","sequence":"additional","affiliation":[{"name":"Department of Pathology, West China Hospital, West China Medical School, Sichuan University, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengni","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Pathology, West China Hospital, West China Medical School, Sichuan University, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miao","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Pathology, West China Hospital, West China Medical School, Sichuan University, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0628-0723","authenticated-orcid":false,"given":"Ni","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Pathology, West China Hospital, West China Medical School, Sichuan University, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiao","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Pathology, West China Hospital, West China Medical School, Sichuan University, Chengdu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2020,12,23]]},"reference":[{"key":"bibr1-1066896920981682","doi-asserted-by":"publisher","DOI":"10.1200\/JCO.2017.74.9598"},{"key":"bibr2-1066896920981682","volume-title":"WHO Classification of Tumours of Soft Tissue and Bone","author":"World Health Organization","year":"2020","edition":"5"},{"key":"bibr3-1066896920981682","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199003000-00008"},{"key":"bibr4-1066896920981682","doi-asserted-by":"publisher","DOI":"10.1053\/j.semdp.2019.02.006"},{"key":"bibr5-1066896920981682","first-page":"623","volume":"148","author":"Fletcher CD","year":"1996","journal-title":"Am J Pathol"},{"key":"bibr6-1066896920981682","doi-asserted-by":"publisher","DOI":"10.1097\/PAS.0b013e3180581fff"},{"key":"bibr7-1066896920981682","doi-asserted-by":"publisher","DOI":"10.1016\/j.anndiagpath.2014.09.002"},{"key":"bibr8-1066896920981682","doi-asserted-by":"publisher","DOI":"10.1097\/PAS.0000000000000137"},{"key":"bibr9-1066896920981682","doi-asserted-by":"publisher","DOI":"10.1097\/01.sla.0000086542.11899.38"}],"container-title":["International Journal of Surgical Pathology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1066896920981682","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/1066896920981682","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1066896920981682","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T10:21:37Z","timestamp":1777458097000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/1066896920981682"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,12,23]]},"references-count":9,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2021,9]]}},"alternative-id":["10.1177\/1066896920981682"],"URL":"https:\/\/doi.org\/10.1177\/1066896920981682","relation":{},"ISSN":["1066-8969","1940-2465"],"issn-type":[{"value":"1066-8969","type":"print"},{"value":"1940-2465","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,12,23]]}}}