[Vesicosigmoid fistulas secondary to diverticulitis: helical CT diagnosis].

Colovesical fistulas are the most common type of vesicointestinal fistula and the most prevalent of these are vesicosigmoid fistulas. In our environment, diverticulitis is the most common cause, accounting for approximately one half of all cases. The literature describes different methods for the diagnosis of colovesical fistula, with computed tomography and cystography being the most useful. We describe two cases of vesicosigmoid fistula secondary to diverticulitis diagnosed at our center using helical computed tomography and review the clinical and radiological findings for this entity.