{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T03:15:26Z","timestamp":1782443726239,"version":"3.54.5"},"reference-count":17,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T00:00:00Z","timestamp":1778716800000},"content-version":"vor","delay-in-days":13,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T00:00:00Z","timestamp":1777593600000},"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":[[2026,5]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Endoscopic kidney\u2010sparing management is increasingly being used for upper tract urothelial carcinoma; however, its use in high\u2010grade diseases remains challenging.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case Presentation<\/jats:title>\n                    <jats:p>An 82\u2010year\u2010old man with a solitary left kidney underwent transurethral lithotripsy for left renal and ureteral stones 25\u2009years after right nephroureterectomy for ureteral carcinoma. A 15\u2010mm papillary tumor was incidentally detected in the upper calyx and partially ablated using a holmium:YAG laser after biopsy. Biopsy revealed a high\u2010grade urothelial carcinoma. Because the patient had a solitary kidney, radical nephroureterectomy would have necessitated dialysis. Therefore, ureteroscopic laser ablation was performed after counseling. A second laser ablation was performed 2\u2009months later. Twelve days later, imaging revealed an enlarged renal pelvic tumor with multiple metastases. Despite receiving gemcitabine plus carboplatin chemotherapy, the patient died.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Ureteroscopic ablation for high\u2010grade upper tract urothelial carcinoma may offer limited cancer control and can be followed by extremely rapid systemic progression.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/iju5.70193","type":"journal-article","created":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T00:29:16Z","timestamp":1778804956000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Rapid Systemic Progression After Ureteroscopic Holmium:\n                    <scp>YAG<\/scp>\n                    Laser Ablation for High\u2010Grade Upper Tract Urothelial Carcinoma in a Solitary Kidney: A Case Report"],"prefix":"10.1002","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-2997-0946","authenticated-orcid":false,"given":"Shinichi","family":"Takebe","sequence":"first","affiliation":[{"name":"Department of Urology International Goodwill Hospital  Yokohama Kanagawa Japan"},{"name":"Department of Urology Yokohama City University Hospital  Yokohama Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nanaho","family":"Demizu","sequence":"additional","affiliation":[{"name":"Department of Urology International Goodwill Hospital  Yokohama Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mei","family":"Tokumoto","sequence":"additional","affiliation":[{"name":"Department of Urology International Goodwill Hospital  Yokohama Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryota","family":"Morinaga","sequence":"additional","affiliation":[{"name":"Department of Urology International Goodwill Hospital  Yokohama Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taku","family":"Mitome","sequence":"additional","affiliation":[{"name":"Department of Urology International Goodwill Hospital  Yokohama Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akitoshi","family":"Takizawa","sequence":"additional","affiliation":[{"name":"Department of Urology International Goodwill Hospital  Yokohama Kanagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,5,14]]},"reference":[{"key":"e_1_2_10_2_1","volume-title":"EAU Guidelines on Upper Urinary Tract Urothelial Carcinoma\u2014Limited Text Update March 2025 [Internet]","author":"Masson\u2010Lecomte 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