Polak-Jonkisz Dorota, Fornalczyk Konstancja, Musiał Kinga, Zaleska-Dorobisz Urszula, Apoznański Wojciech, Zwolińska Danuta
Department of Pediatric Nephrology, Medical University of Wroclaw, Poland.
Postepy Hig Med Dosw (Online). 2012 Apr 19;66:210-4. doi: 10.5604/17322693.991491.
Crossed renal ectopia (C-RE) is a rare congenital anomaly in which both kidneys are located unilaterally. The crossed kidney is situated on the side opposite to its ureteral orifice and usually lies below the normal kidney. The frequency of this malformation is estimated at 0.05% to 0.1%. Most of the patients remain asymptomatic. In other cases C-RE is diagnosed incidentally on routine ultrasonography, due to the presence of unspecific symptoms. The diagnosis of C-RE is possible due to a wide range of imaging techniques: US, IVU, CT, MRI, and TcDMSA scan. Among them IVU, CT, and MRI have the highest degree of confidence. The aim of this retrospective study was to present our own experience with 5 children affected with C-RE, emphasizing the differences in clinical picture and low sensitivity of ultrasound images. In all of them the final diagnosis was established by IVU or MRI.
交叉异位肾（C-RE）是一种罕见的先天性异常，其特点是双侧肾脏位于同一侧。交叉异位的肾脏位于与其输尿管口相对的一侧，通常位于正常肾脏下方。这种畸形的发生率估计为0.05%至0.1%。大多数患者没有症状。在其他情况下，由于存在非特异性症状，C-RE在常规超声检查时被偶然诊断出来。由于多种成像技术的应用，如超声（US）、静脉肾盂造影（IVU）、计算机断层扫描（CT）、磁共振成像（MRI）和锝-二巯基丁二酸（TcDMSA）扫描，C-RE的诊断成为可能。其中，IVU、CT和MRI的诊断置信度最高。本回顾性研究的目的是介绍我们对5例受C-RE影响儿童的经验，强调临床表现的差异以及超声图像的低敏感性。所有病例的最终诊断均通过IVU或MRI确定。
