{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T00:34:01Z","timestamp":1781829241436,"version":"3.54.5"},"reference-count":11,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,12,12]],"date-time":"2025-12-12T00:00:00Z","timestamp":1765497600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,12,12]],"date-time":"2025-12-12T00:00:00Z","timestamp":1765497600000},"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":[[2026,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>We present a technique that combines a fluorescent ureteral catheter with Firefly near\u2010infrared fluorescence imaging to identify the ureter and avoid injury during robot\u2010assisted resection of a retroperitoneal cystic tumor.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case Presentation<\/jats:title>\n                    <jats:p>Computed tomography revealed a 6\u2010cm retroperitoneal cystic mass anterior to the abdominal aorta near the lower pole of the left kidney that adhered to the left ureter in a 53\u2010year\u2010old man. A fluorescent ureteral catheter was placed preoperatively, and robot\u2010assisted transperitoneal resection was performed. Firefly imaging enabled clear visualization of the ureter, allowing safe dissection and tumor identification. The tumor was excised without cyst rupture. The console time was 4\u2009h 13\u2009min, with minimal blood loss. Pathology confirmed schwannoma.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>We demonstrated the feasibility and clinical benefits of integrating a fluorescent ureteral catheter with Firefly fluorescence imaging for intraoperative ureteral identification during robot\u2010assisted surgery. This fluorescence\u2010guided approach improves dissection accuracy and helps prevent ureteral injury.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/iju5.70125","type":"journal-article","created":{"date-parts":[[2025,12,12]],"date-time":"2025-12-12T15:04:35Z","timestamp":1765551875000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Successful Robot\u2010Assisted Resection of a Retroperitoneal Cystic Tumor With Fluorescent Ureteral Stent and Firefly Imaging"],"prefix":"10.1002","volume":"9","author":[{"given":"Yoichiro","family":"Tohi","sequence":"first","affiliation":[{"name":"Department of Urology, Faculty of Medicine Kagawa University  Takamatsu Kagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kana","family":"Kohashiguchi","sequence":"additional","affiliation":[{"name":"Department of Urology, Faculty of Medicine Kagawa University  Takamatsu Kagawa 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