Sutures and Wound Repair/ General Surgery (ABSA) Practice Test

Which of the following urinary diversion procedures involves transplanting the ureter directly onto the sigmoid colon?

1. Ureterocutaneous transplant

2. Ureterosigmoidostomy

3. Ileal conduit

4. Ureteroureterostomy

The correct answer is: Ureterosigmoidostomy

The urinary diversion procedure that involves transplanting the ureter directly onto the sigmoid colon is ureterosigmoidostomy. This method is used when the bladder is removed or non-functional, allowing urine to bypass the bladder and flow directly into the sigmoid colon. This is advantageous in certain surgical contexts, particularly when the bladder is not viable, as it enables urinary management without the need for an external bag or device. In ureterosigmoidostomy, the ureters are surgically anastomosed or connected to the sigmoid colon, allowing urine to be excreted along with intestinal contents. This procedure is particularly useful in cases such as radical cystectomy for bladder cancer, where bladder function is no longer required. The other procedures listed, while relevant in the context of urinary diversions, do not involve direct connection to the sigmoid colon. Understanding the distinct anatomical and surgical implications of each procedure is crucial for making informed decisions in surgical practice and patient management.