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In this study, we report a case of an asymptomatic kidney disease in a 33-year-old man, who demonstrates abnormal echo of renal sinus anomaly discovered incidentally in ultrasound examination. Computed tomography urography (CTU) exhibited the other small duplex kidney located in renal sinus. In the excretory phase images, the contrast medium within its small renal pelvis could be seen to flow into the right major renal calices. This case exhibited a very rare anatomical variation of duplicated renal malformation.<\/jats:p>","DOI":"10.1515\/med-2021-0271","type":"journal-article","created":{"date-parts":[[2021,4,20]],"date-time":"2021-04-20T01:01:15Z","timestamp":1618880475000},"page":"651-654","source":"Crossref","is-referenced-by-count":2,"title":["CTU findings of duplex kidney in kidney: A rare duplicated renal malformation"],"prefix":"10.1515","volume":"16","author":[{"given":"Nanai","family":"Xie","sequence":"first","affiliation":[{"name":"Department of Radiology, Longgang District People\u2019s Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong , Shenzhen , Guangdong Province, 518172 , China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Radiology, Longgang District People\u2019s Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong , Shenzhen , Guangdong Province, 518172 , China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jie","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Radiology, Longgang District People\u2019s Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong , Shenzhen , Guangdong Province, 518172 , China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Heng","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Radiology, Longgang District People\u2019s Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong , Shenzhen , Guangdong Province, 518172 , China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wanling","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Radiology, Longgang District People\u2019s Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong , Shenzhen , Guangdong Province, 518172 , China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"374","published-online":{"date-parts":[[2021,4,19]]},"reference":[{"key":"2022091918202949016_j_med-2021-0271_ref_001","doi-asserted-by":"crossref","unstructured":"Davda S, Vohra A. 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