Berhe Tekleberhan, Hassen Seid Mohammed, Gebrehiwot Fitsum Gebreegziabher, Mummed Ferid Ousman, Issack Feysel Hassen, Dino Masresha Solomon, Akkasa Sena Sefera, Zerihun Getachew Adamu, Gebreselassie Kaleab Habtemichael
Urology Unit, Department of Surgery, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia.
Res Rep Urol. 2021 Dec 23;13:853-857. doi: 10.2147/RRU.S347328. eCollection 2021.
A supernumerary kidney is an extremely rare congenital anomaly, defined as the presence of one or more extra kidneys. Thus far, there have been less than 100 cases reported in the medical literature. It has its capsule, vascular supply, and collecting system. It frequently causes diagnostic challenges in clinical practice. The supernumerary kidney can be symptomatic due to the presence of stone.
We present a case of a 19-year-old male patient who came to our clinic with the complaint of abdominal pain. On computed tomography urography (CTU), he was found to have a caudally located left fused supernumerary kidney with a separate vascular supply. Both left kidneys had a separately draining calyceal systems uniting at the left renal pelvis and drained by a single ureter. Multiple left renal stones (largest measures 4cm x 2.2cm) in both kidneys were also seen. The stones were removed surgically by doing pyelolithotomy and radial nephrolithotomy. The patient was doing well during follow-up visits with the improvement of abdominal pain.
Supernumerary kidney is a very rare congenital renal anomaly. This case is even unique, because of the fused supernumerary kidney and the presence of a single left renal pelvis and ureter. Imaging is very essential for planning surgical intervention. Stones in such kidneys can be managed with nephrolithotomy and/or pyelolithotomy.
额外肾是一种极为罕见的先天性异常，定义为存在一个或多个额外的肾脏。迄今为止，医学文献中报道的病例不足100例。它有自己的包膜、血管供应和集合系统。在临床实践中，它常常带来诊断挑战。额外肾因存在结石可能出现症状。
我们报告一例19岁男性患者，因腹痛前来我院就诊。在计算机断层扫描尿路造影（CTU）检查中，发现他有一个位于尾部的左融合额外肾，有独立的血管供应。双侧左肾都有各自引流的肾盏系统，在左肾盂处汇合，由单一输尿管引流。还发现双侧左肾有多发结石（最大尺寸为4cm×2.2cm）。通过肾盂切开取石术和放射状肾切开取石术手术取出结石。随访期间患者情况良好，腹痛有所改善。
额外肾是一种非常罕见的先天性肾脏异常。该病例尤为独特，因为是融合额外肾且只有一个左肾盂和输尿管。影像学检查对于规划手术干预非常重要。此类肾脏中的结石可通过肾切开取石术和/或肾盂切开取石术进行处理。
