Abstract
A 79-year-old man who had undergone left internal inguinal hernia repair with mesh plug method at another hospital two months earlier developed perivesical abscess. Conservative therapy was successful, but about six months later, urinalysis revealed air in the urine and fecaluria, Subsequent close examinations offered a diagnosis of colovesical fistula and laparotomy was performed. We identified that the sigmoid colon and the bladder had formed a mass together with the left inguinal hernia repair site which could not be dissected or isolated. We had to transect the sigmoid colon with a pedicle to make a deiverticulum with the bladder, and then the proximal side of the stump of the sigmoid colon was used for colostomy. In order to prevent such severe complication, we have to be careful not to employ a surgical procedure with which artificial materials such as plug and mesh are exposed or project in the abdomen as far as possible.
