{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T16:31:44Z","timestamp":1772987504641,"version":"3.50.1"},"reference-count":17,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2025,12,8]],"date-time":"2025-12-08T00:00:00Z","timestamp":1765152000000},"content-version":"vor","delay-in-days":341,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T00:00:00Z","timestamp":1735689600000},"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":["Asian J Endoscop Surgery"],"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Upper tract urothelial carcinoma (UTUC) often requires nephroureterectomy. The retroperitoneal robotic approach, particularly using the hinotori system, may offer advantages, especially for smaller\u2010framed patients.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Five UTUC patients (\u2264\u2009162\u2009cm) underwent pure retroperitoneal robot\u2010assisted nephroureterectomy (RANU) using the hinotori system (July\u2013December 2024). Standardized trocar placement was used without port relocation. Outcomes included operative time, re\u2010docking, and complications.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Median patient age was 82\u2009years. All surgeries were completed without peritoneum opening, conversion to open surgery, or major complications. Mean operative time was 257\u2009min, with re\u2010docking averaging 18\u2009min. All cases achieved negative margins, and no readmissions occurred within 30\u2009days.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Pure retroperitoneal RANU using the hinotori system is safe and feasible, particularly for smaller patients. This approach minimizes procedural interference and may serve as an alternative to transperitoneal nephroureterectomy. Further studies are needed to evaluate oncological outcomes and refine surgical techniques.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/ases.70174","type":"journal-article","created":{"date-parts":[[2025,12,9]],"date-time":"2025-12-09T03:21:37Z","timestamp":1765250497000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Pure Retroperitoneal Robot\u2010Assisted Radical Nephroureterectomy (RANU): Initial Experience Using the\u00a0Hinotori Surgical Robot System"],"prefix":"10.1111","volume":"18","author":[{"given":"Yuichiro","family":"Konnai","sequence":"first","affiliation":[{"name":"Department of Urology Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9222-0999","authenticated-orcid":false,"given":"Kazuhiro","family":"Matsumoto","sequence":"additional","affiliation":[{"name":"Department of Urology Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keishiro","family":"Fukumoto","sequence":"additional","affiliation":[{"name":"Department of Urology Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toshikazu","family":"Takeda","sequence":"additional","affiliation":[{"name":"Department of Urology Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yota","family":"Yasumizu","sequence":"additional","affiliation":[{"name":"Department of Urology Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nobuyuki","family":"Tanaka","sequence":"additional","affiliation":[{"name":"Department of Urology Keio University School of Medicine  Tokyo 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