Abstract
Aim: Colon injury is an important complication of percutaneous renal surgery. Retrorenal colon on computed tomography (CT) is reported in 10% of patients in the prone position. Our aim is to discuss the necessity of routine preoperative CT and perform a cost analysis of this procedure. Methods: We retrospectively analyzed the records of 285 patients with renal calculi who underwent percutaneous nephrolithotomy between April 2007 and April 2012. After the 2 nd colon perforation, we began to use CT routinely to image stones and to determine the presence of retrorenal colon. We compared the total cost of CTs per incidence of retro colon versus the cost of restoring complications. Results: The first colon injury was extraperitoneal and could be managed conservatively. The cost of this management was only $280. The second colon injury was intraperitoneal and could be managed with a series of open surgeries. The cost of these operations was $8,400. The cost of diagnosis using CT per case of retrorenal colon was $1,833. Conclusion: CT, which should be low-dose, if possible, should be performed routinely in all patients to prevent colon injuries. This technique appears to be cost-effective.
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