Sharma Govind, Jangid Dharmendra Kumar, Yadav S S, Mathur Rajeev, Tomar Vinay
Department of Urology and Renal Transplantation, SMS. Medical College, Jaipur, India,
Urolithiasis. 2015 Apr;43(2):171-5. doi: 10.1007/s00240-014-0733-5. Epub 2014 Oct 25.
Upper urinary tract is accessed for various procedures. The maximum numbers of procedures are carried out in prone position. Perforation of the colon is a well-known complication. The incidence of retrorenal colon varies from 10-20% in prone position, but the chances of injury is around <1%. These facts lead us to review the occurrence of retrorenal colon. The CT scan is imaging test of choice.
The aim of this study was to find out the occurrence of retrorenal colon at our centre and potential risk of injury to colon when kidney is punctured at various levels by percutaneous route.
It is a hospital-based descriptive type of observational study. We reviewed CT abdomen in supine and prone position in patients with different problems from January 2013 to December 2013. Inclusion and exclusion criteria applied. Colon posterior to the line as described by Prassopoulos and coworkers is regarded as retrorenal colon and being at risk.
A total number of 700 patients were included, 350 each in supine and prone position. Patients had CT scan as a part of workup for pain abdomen in 27% cases, calculus disease in 25% cases, carcinoma bladder in 16% cases and rest were of different diagnoses. Retrorenal colon was found in 2% patients in supine and 6.8% patients in prone position.
Considering the low incidence, the sample size in our study is small. We recommend multicentric large population-based study to establish the true incidence of retrorenal colon and chances of injury to colon.
上尿路可用于多种手术。大多数手术是在俯卧位进行的。结肠穿孔是一种众所周知的并发症。肾后结肠的发生率在俯卧位为10% - 20%，但损伤几率约<1%。这些事实促使我们对上尿路手术中肾后结肠的发生情况进行回顾。CT扫描是首选的影像学检查。
本研究的目的是了解我院肾后结肠的发生率，以及经皮穿刺肾脏不同层面时结肠潜在的损伤风险。
这是一项基于医院的描述性观察性研究。我们回顾了2013年1月至2013年12月因不同问题就诊的患者仰卧位和俯卧位的腹部CT。应用了纳入和排除标准。按照Prassopoulos及其同事所描述的线后方的结肠被视为肾后结肠且有风险。
共纳入700例患者，仰卧位和俯卧位各350例。27%的患者因腹痛进行CT扫描作为检查的一部分，25%的患者因结石病，16%的患者因膀胱癌，其余为不同诊断。仰卧位2%的患者和俯卧位6.8%的患者发现有肾后结肠。
考虑到发生率较低，我们研究的样本量较小。我们建议开展多中心大样本的基于人群的研究，以确定肾后结肠的真实发生率以及结肠损伤的几率。
