Retained Foreign Body Presenting as Pouch Stone After Continent Urinary Diversion.

Continent urinary diversion is a procedure commonly performed in patients after cystectomy who wish to not have a urostomy. Well-documented complications after continent urinary diversion include urinary tract infections and formation of urinary stones. However, these are typically late complications, and few reports have described the onset of these urinary symptoms within 12 months of initial continent urinary diversion. Herein we report a case of a 41-year-old woman with history of cystectomy with continent urinary diversion who presents with recurrent infections and a calculus in the pouch 10 months after the initial procedure. Upon surgical exploration for removal of the stone, it was discovered that the stone was in fact a calcified retained catheter tip. This case further highlights that stone formation within 12 months of a urinary diversion is unusual and should prompt additional work-up for foreign body.