{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T01:55:03Z","timestamp":1774576503415,"version":"3.50.1"},"reference-count":19,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T00:00:00Z","timestamp":1772928000000},"content-version":"vor","delay-in-days":7,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T00:00:00Z","timestamp":1772323200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["IJU Case Reports"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Reactive lymphoid hyperplasia (RLH) is a rare benign lymphoproliferative disorder that rarely involves the kidney and has not been reported in association with regional lymphadenopathy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case Presentation<\/jats:title>\n                    <jats:p>A 70\u2010year\u2010old woman was incidentally found to have a left renal mass. Contrast\u2010enhanced computed tomography revealed a 20\u2010mm enhancing renal lesion with enlarged hilar lymph nodes, leading to a preoperative diagnosis of renal cell carcinoma with nodal metastasis (cT1aN1M0). Open radical nephrectomy with regional lymphadenectomy was performed. Histopathological analyses established a diagnosis of reactive lymphoid hyperplasia. No additional treatment was administered, and the patient has remained free of recurrence for 3\u2009months.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>We report the first case of RLH accompanied by regional lymph node enlargement. Because RLH can closely mimic renal cell carcinoma on imaging, it should be considered in the differential diagnosis of renal masses when the clinical presentation is inconsistent with typical renal cell carcinoma.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/iju5.70162","type":"journal-article","created":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T00:45:37Z","timestamp":1773017137000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A Case of Reactive Lymphoid Hyperplasia That Is Difficult to Differentiate From Renal Cancer With Lymph Node Metastasis"],"prefix":"10.1002","volume":"9","author":[{"given":"Shunki","family":"Nakagawa","sequence":"first","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasutomo","family":"Nakai","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yujiro","family":"Hayashi","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-4356-0458","authenticated-orcid":false,"given":"Yutaka","family":"Kurahashi","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-3316-2331","authenticated-orcid":false,"given":"Shu","family":"Okamoto","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-3723-8058","authenticated-orcid":false,"given":"Yuichiro","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Norihiko","family":"Kawamura","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akira","family":"Nagahara","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-2093-9107","authenticated-orcid":false,"given":"Masashi","family":"Nakayama","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7644-1350","authenticated-orcid":false,"given":"Kazuo","family":"Nishimura","sequence":"additional","affiliation":[{"name":"Department of Urology Osaka International Cancer Institute  Osaka City Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2026,3,8]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.2169\/internalmedicine.31.474"},{"issue":"3","key":"e_1_2_9_3_1","first-page":"1","article-title":"Reactive Lymphoid Hyperplasia of the Liver Mimicking Hepatocellular Carcinoma: A Case Report","volume":"2022","author":"Anuparp T.","year":"2022","journal-title":"Journal of Surgical Case Reports"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0190-9622(89)70279-6"},{"issue":"3","key":"e_1_2_9_5_1","first-page":"553","article-title":"Malignant Lymphoma of the Stomach: Its Diagnosis, Distinction and Biologic Behavior","volume":"34","author":"Smith J.","year":"1958","journal-title":"American Journal of Pathology"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0046-8177(90)90181-4"},{"issue":"5","key":"e_1_2_9_7_1","first-page":"671","article-title":"Lymphadenopathy of IgG4\u2010Related Disease","volume":"32","author":"Cheuk W.","year":"2008","journal-title":"American Journal of Pathology"},{"issue":"9","key":"e_1_2_9_8_1","first-page":"e328","article-title":"The 2016 Revision of the World Health Organization Classification of Lymphoid Neoplasms","volume":"17","author":"Swerdlow S. 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