Meyer Hans Jonas, Pfeil Alina, Schramm Dominik, Bach Andreas Gunter, Surov Alexey
Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle Department of Diagnostic and Interventional Radiology, University of Leipzig, Leipzig, Germany.
Medicine (Baltimore). 2017 Jun;96(26):e7039. doi: 10.1097/MD.0000000000007039.
Renal incidental findings (IFs) are common. However, previous reports investigated renal IFs were limited to patient selection. The purpose of this study was to estimate the prevalence and distribution of all renal IFs on computed tomography (CT) in a large patient collective.All patients, who underwent CT investigations of the abdominal region at our institution in the time period between January 2006 and February 2014 were included in this study. Inclusion criteria were as follows: no previous history of renal diseases and well image quality. Patients with known kidney disorders were excluded from the study. Overall, 7365 patients meet the inclusion criteria were identified. There were 2924 (39.7%) women and 4441 men (60.3%) with a mean age of 59.8 ± 16.7 years. All CTs were retrospectively analyzed in consensus by 2 radiologists. Collected data were evaluated by means of descriptive statistics.Overall, 2756 patients (37.42% of all included patients) showed 3425 different renal IFs (1.24 findings per patient). Of all renal IFs, 123 (3.6%) findings were clinically relevant, 259 (7.6%) were categorized as possibly clinically relevant, and 3043 (88.8%) were clinically non relevant.Different renal IFs can be detected on CT. The present study provides a real prevalence and proportion of them in daily clinical routine. Kidneys should be thoroughly evaluated because of the fact that incidental renal findings occur frequently.
肾脏偶发发现（IFs）很常见。然而，既往关于肾脏IFs的报告仅限于患者选择方面。本研究的目的是评估在一个大型患者群体中，计算机断层扫描（CT）上所有肾脏IFs的患病率及分布情况。
2006年1月至2014年2月期间在我们机构接受腹部CT检查的所有患者均纳入本研究。纳入标准如下：既往无肾脏疾病史且图像质量良好。已知患有肾脏疾病的患者被排除在研究之外。总体而言，确定了7365例符合纳入标准的患者。其中有2924名女性（39.7%）和4441名男性（60.3%），平均年龄为59.8±16.7岁。所有CT图像均由2名放射科医生进行回顾性共识分析。收集的数据采用描述性统计方法进行评估。
总体而言，2756例患者（占所有纳入患者的37.42%）显示出3425种不同的肾脏IFs（每位患者1.24个发现）。在所有肾脏IFs中，123个发现（3.6%）具有临床相关性，259个（7.6%）被归类为可能具有临床相关性，3043个（88.8%）无临床相关性。
CT上可检测到不同的肾脏IFs。本研究提供了它们在日常临床实践中的实际患病率和比例。由于肾脏偶发发现经常发生，因此应对肾脏进行全面评估。
