{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,19]],"date-time":"2025-09-19T11:11:59Z","timestamp":1758280319985,"version":"3.38.0"},"reference-count":11,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2025,3,2]],"date-time":"2025-03-02T00:00:00Z","timestamp":1740873600000},"content-version":"vor","delay-in-days":1,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["IJU Case Reports"],"published-print":{"date-parts":[[2025,3]]},"abstract":"<jats:sec><jats:title>Introduction<\/jats:title><jats:p>Standard treatments for squamous cell carcinoma of the anal canal include chemoradiotherapy and surgical resection. We report a rare case of squamous cell carcinoma of the anal canal with prostate invasion treated with curative surgical methods using a Retzius\u2010sparing robot\u2010assisted approach.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case presentation<\/jats:title><jats:p>A 76\u2010year\u2010old male had undergone brachytherapy for prostate adenocarcinoma (cT2aN0M0). Nine years later, the patient was diagnosed with anal canal carcinoma (cT2N0M0) following the onset of anal pain. During a robot\u2010assisted abdominoperineal resection, prostate invasion was suspected and a prostatectomy was performed as an additional excision of the prostate using a Retzius\u2010sparing approach. Although an anastomotic leak was observed postoperatively, it was conservatively managed with bilateral ureteral stent placement. The patient remained recurrence\u2010free after surgery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A Retzius\u2010sparing robot\u2010assisted approach in radical prostatectomy may be a safe and feasible option for cases of anal canal carcinoma with suspected prostate invasion.<\/jats:p><\/jats:sec>","DOI":"10.1002\/iju5.70003","type":"journal-article","created":{"date-parts":[[2025,3,4]],"date-time":"2025-03-04T07:38:06Z","timestamp":1741073886000},"page":"174-178","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Efficacy of prostatectomy using a Retzius\u2010sparing approach as an additional excision in anal canal carcinoma after brachytherapy for prostate adenocarcinoma"],"prefix":"10.1002","volume":"8","author":[{"given":"Takahiro","family":"Yanase","sequence":"first","affiliation":[{"name":"Department of Nephro\u2010urology Nagoya City University, Graduate School of Medical 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