Hopper K D, Sherman J L, Luethke J M, Ghaed N
Radiology. 1987 Feb;162(2):443-6. doi: 10.1148/radiology.162.2.3797658.
Ninety patients underwent computed tomographic scanning in both the supine and prone positions to show the orientation of the retroperitoneal colon about the kidneys and allow evaluation of changes in colonic position and contents. The data were compared with data on 500 patients scanned only when supine. Particular attention was given to bowel found posterior to the kidneys (retrorenal colon): its frequency of occurrence on 500 scans of supine patients was 1.9%, but 10.0% in the 90 prone patients. Because most invasive renal procedures would not intersect with retrorenal colon located behind the lateral one-third of the kidney, the data were reevaluated after deletion of these patients, giving a frequency in prone patients of 4.7%. This was found exclusively at the level of the lower renal poles, and the involved colon was extensively distended with gas. Attention should be given at fluoroscopy to detect this unusual, posteriorly positioned, air-filled colon before any invasive renal procedure.
90名患者分别在仰卧位和俯卧位接受了计算机断层扫描，以显示腹膜后结肠围绕肾脏的方位，并评估结肠位置和内容物的变化。将这些数据与500名仅在仰卧位进行扫描的患者的数据进行了比较。特别关注位于肾脏后方的肠管（肾后结肠）：在500名仰卧位患者的扫描中，其出现频率为1.9%，而在90名俯卧位患者中为10.0%。由于大多数侵入性肾脏手术不会与位于肾外侧三分之一后方的肾后结肠相交，在剔除这些患者后重新评估数据，俯卧位患者的频率为4.7%。这仅在肾下极水平发现，受累结肠广泛积气扩张。在任何侵入性肾脏手术前，荧光透视检查时应注意检测这种异常的、位于后方的、充满气体的结肠。
