• HuaJie He, YuanBi Huang, Lu Yu, QiGuang Li, Xian Long, YongPeng Li, RongChao Chen, and XianLin Yi.
• Department of Urology, Cancer Hospital of Guangxi Medical University & Guangxi Cancer Research Institute, Nanning.
• Medicine (Baltimore). 2021 Mar 26; 100 (12): e25187e25187.

IntroductionDuplicate kidneys are the most common congenital abnormality of the urinary system. The location of duplicate kidneys varies. We report a case of an adolescent with upper and lower kidneys that are arranged vertically and approximately T-shaped.Patient ConcernsA 16-year-old male teenager was examined for pain in the left side of the waist. The Computed Tomography scan revealed that the left kidney was incompletely duplicated and fused; the left upper urinary tract was incompletely obstructed.DiagnosisThe abdominal tomography confirmed the diagnosis of incomplete duplicate kidney.InterventionsThe patient underwent laparoscopic surgery. The failure to ligate the renal pedicle resulted in increased bleeding during the operation and an open ureteral stump.OutcomesNo urine leakage occurred after the operation. Doppler ultrasound of the urinary system showed no hydronephrosis, and the patient was asymptomatic.ConclusionThrough this case report, we found that the duplicate kidneys could be arranged in a T-shape under laparoscopy. Although only the supply of the duplicate renal arteries can be ligated during surgical resection, the renal pedicle must also be ligated during the operation if there is a lot of bleeding.Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.

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