Which urinary diversion is a variation of the ileal conduit that drains urine via a valve with no external bag?

• A. Cutaneous Urostomy
• B. Neobladder
• C. Conventional Urostomy
• D. Continent Urinary Reservoir

Answer: (D)

A key idea here is urinary diversions that store urine and require no external bag. A continent urinary reservoir is built from an ileal segment to form a storage pouch with a continence valve and a catheterizable outlet. The urine is kept in the reservoir and emptied by the patient with a catheter through the stoma, so there’s no external collecting bag. This matches the description of draining via a valve with no external bag. In contrast, cutaneous urostomy or conventional urostomy drain directly to an external bag, and a neobladder empties through the urethra rather than via a catheterizable valve. Thus, the continent urinary reservoir is the correct choice.