Abstract
Fistulas between the rectum and the bladder have different etiologies, they may be congenital, acquired, or iatrogenic. Symptoms such as pneumaturia, fecaluria, and the passage of urine through the rectum are often alleviated by fecal and urinary diversion. The interposition of a flap of gracilis muscle is a technique that is very successful, but the conventional dissection of this flap involves a very large incision and a worse aesthetic result .