Colovesical fistula complicating colonic diverticulosis.

Two cases of colovesical fistulae secondary to colonic diverticulosis are reported. Urinary symptoms were the prominent presenting features. Barium enema was helpful in documenting the fistulae, which cystoscopically was not localised. Definitive treatment included resection of the fistula and the diseased segment of the intestine. Both patients are well on follow-up. Diverticulosis coli should be considered in the differential diagnosis of colovesical fistulae even in tropical countries.