{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,13]],"date-time":"2025-05-13T15:14:42Z","timestamp":1747149282043,"version":"3.40.5"},"reference-count":10,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,9,7]],"date-time":"2021-09-07T00:00:00Z","timestamp":1630972800000},"content-version":"vor","delay-in-days":0,"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":[[2022,1]]},"abstract":"<jats:sec><jats:title>Introduction<\/jats:title><jats:p>Repeated urinary retention due to clots caused by congenital renal arteriovenous malformation is rare.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case presentation<\/jats:title><jats:p>A 40\u2010year\u2010old woman (case 1) and a 66\u2010year\u2010old man (case 2) experienced recurrent urinary retention due to clots. Neither patient had a history of renal trauma nor was taking any medications. Contrast\u2010enhanced abdominal computed tomography revealed a large hematoma in the renal pelvis and ureter with no masses, stones, or vascular lesions and only dilated blood vessels in the arterial phase in case 1. Angiography of the kidney in both patients revealed an arteriovenous malformation, and embolization of the arteries feeding the arteriovenous malformation was performed. Soon after embolization, hematuria disappeared completely with no recurrence for 5\u2009years in case 1 and 2\u2009years in case 2.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Congenital renal arteriovenous malformation should be considered as a cause of recurrent clot retention, and angiographic embolization of the feeding arteries can be an effective treatment.<\/jats:p><\/jats:sec>","DOI":"10.1002\/iju5.12368","type":"journal-article","created":{"date-parts":[[2021,9,7]],"date-time":"2021-09-07T23:29:17Z","timestamp":1631057357000},"page":"5-8","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Recurrent urinary retention due to clots caused by a congenital renal arteriovenous malformation that forms a complex vascular network: Report of two cases"],"prefix":"10.1002","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4178-0253","authenticated-orcid":false,"given":"Makoto","family":"Ishii","sequence":"first","affiliation":[{"name":"Departments of Urology Osaka Rosai Hospital Sakai City Osaka Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3953-6534","authenticated-orcid":false,"given":"Wataru","family":"Nakata","sequence":"additional","affiliation":[{"name":"Departments of Urology Osaka Rosai Hospital Sakai City Osaka Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuki","family":"Horibe","sequence":"additional","affiliation":[{"name":"Departments of Urology Osaka Rosai Hospital Sakai City Osaka Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Go","family":"Tsujimura","sequence":"additional","affiliation":[{"name":"Departments of Urology Osaka Rosai Hospital Sakai City Osaka 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