{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,29]],"date-time":"2026-06-29T12:31:49Z","timestamp":1782736309465,"version":"3.54.5"},"reference-count":13,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2026,3,2]],"date-time":"2026-03-02T00:00:00Z","timestamp":1772409600000},"content-version":"vor","delay-in-days":1,"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>Ureteral diverticula are rare urological anomalies characterized by outpouchings of the ureteral wall. Malignancy arising from these structures is exceptionally rare, with only a few cases reported.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case Presentation<\/jats:title>\n                    <jats:p>We report a 57\u2010year\u2010old male with high\u2010grade urothelial carcinoma arising from a ureteral diverticulum in the left distal ureter. The patient experienced painless gross hematuria, and computed tomography revealed a 3\u2009cm undetermined mass near the left distal ureter. Multiple endoscopic diagnostic procedures were inconclusive, with the final diagnosis confirmed intraoperatively. The surgery involved resection of the mass, and intraoperative frozen section analysis revealed high\u2010grade urothelial carcinoma. A segmental ureteral resection was performed with reconstruction using a Boari flap and Psoas hitch. Final histopathology confirmed locally advanced, high\u2010grade pT3 urothelial carcinoma, and adjuvant chemotherapy was recommended.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This case underscores the diagnostic and management challenges of upper tract urothelial carcinoma, especially in rare cases involving ureteral diverticula.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/iju5.70153","type":"journal-article","created":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T10:51:50Z","timestamp":1772967110000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["High\u2010Grade Urothelial Carcinoma Arising From a Ureteral Diverticulum: A Rare Case Report"],"prefix":"10.1002","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-0108-7150","authenticated-orcid":false,"given":"Iason","family":"Papadopoulos","sequence":"first","affiliation":[{"name":"Department of Urology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7313-2088","authenticated-orcid":false,"given":"Stephan","family":"Ledderose","sequence":"additional","affiliation":[{"name":"Institute of Pathology, LMU Munich  Munich Germany"},{"name":"Department of Radiology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2126-7305","authenticated-orcid":false,"given":"Benedikt","family":"Ebner","sequence":"additional","affiliation":[{"name":"Department of Urology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena","family":"Berg","sequence":"additional","affiliation":[{"name":"Department of Urology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Can","family":"Aydogdu","sequence":"additional","affiliation":[{"name":"Department of Urology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julian","family":"Marcon","sequence":"additional","affiliation":[{"name":"Department of Urology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert","family":"Bischoff","sequence":"additional","affiliation":[{"name":"Department of Urology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Kazmierczak","sequence":"additional","affiliation":[{"name":"Department of Radiology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian G.","family":"Stief","sequence":"additional","affiliation":[{"name":"Department of Urology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lennert","family":"Eismann","sequence":"additional","affiliation":[{"name":"Department of Urology University Hospital, LMU Munich  Munich Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,3,2]]},"reference":[{"issue":"7","key":"e_1_2_8_2_1","first-page":"284","article-title":"Ureteral Diverticula","volume":"19","author":"Hale N. G.","year":"1921","journal-title":"California State Journal of Medicine"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022\u20105347(17)65758\u20106"},{"issue":"5","key":"e_1_2_8_4_1","first-page":"6893","article-title":"Ureteral Diverticulum: A Review of the Current Literature","volume":"20","author":"McLoughlin L. 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