{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,21]],"date-time":"2025-12-21T14:25:31Z","timestamp":1766327131971,"version":"3.40.5"},"reference-count":7,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2021,5,3]],"date-time":"2021-05-03T00:00:00Z","timestamp":1620000000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["IJU Case Reports"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:sec><jats:title>Introduction<\/jats:title><jats:p>Cross\u2010fused renal ectopia is a rare congenital malformation, and few cases of urolithiasis have been treated by retrograde ureteroscopic lithotripsy. We report a case of urolithiasis in right\u2010to\u2010left and superior\u2010type cross\u2010fused renal ectopia, successfully treated by the retrograde approach.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case presentation<\/jats:title><jats:p>A 69\u2010year\u2010old woman with\u00a0two 14\u2010mm renal stones in cross\u2010fused renal ectopia underwent retrograde ureteroscopic lithotripsy. Although we did not recognize the anomaly preoperatively, we could diagnose urolithiasis in the ectopic kidney intraoperatively. The patient had no complication, and follow\u2010up computed tomography after 3\u00a0months showed only a 5\u2010mm renal stone.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Although urolithiasis in patients with cross\u2010fused renal ectopia is a challenging condition for the urologist, the retrograde approach is a safe and effective treatment method. It is necessary to carefully examine the urinary tract especially in a patient with a history of unidentified solitary kidney.<\/jats:p><\/jats:sec>","DOI":"10.1002\/iju5.12295","type":"journal-article","created":{"date-parts":[[2021,5,3]],"date-time":"2021-05-03T10:06:32Z","timestamp":1620036392000},"page":"232-234","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Retrograde ureteroscopic lithotripsy in cross\u2010fused renal ectopia"],"prefix":"10.1002","volume":"4","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4151-7984","authenticated-orcid":false,"given":"Shinya","family":"Somiya","sequence":"first","affiliation":[{"name":"Department of Urology Ijinkai Takeda General Hospital Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1979-8270","authenticated-orcid":false,"given":"Toshifumi","family":"Takahashi","sequence":"additional","affiliation":[{"name":"Department of Urology Ijinkai Takeda General Hospital Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6322-9190","authenticated-orcid":false,"given":"Katsuhiro","family":"Ito","sequence":"additional","affiliation":[{"name":"Department of Urology Ijinkai Takeda General Hospital Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshihito","family":"Higashi","sequence":"additional","affiliation":[{"name":"Department of Urology Ijinkai Takeda General Hospital Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hitoshi","family":"Yamada","sequence":"additional","affiliation":[{"name":"Department of Urology Ijinkai Takeda General Hospital Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9445-4035","authenticated-orcid":false,"given":"Toru","family":"Kanno","sequence":"additional","affiliation":[{"name":"Department of Urology Ijinkai Takeda General Hospital Kyoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,5,3]]},"reference":[{"key":"e_1_2_8_2_1","first-page":"3140","volume-title":"Campbell Walsh Urology","author":"Shapiro E","year":"2012"},{"key":"e_1_2_8_3_1","first-page":"371","article-title":"Management of upper urinary tract calculi in crossed fused renal ectopic anomaly","volume":"15","author":"Huang L","year":"2018","journal-title":"Exp. 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