Appendico-vesical fistula. Case report.

Two cases of appendico-vesical fistula are reported. In one patient a spontaneous healing with fibrosis of the appendix had probably occurred. The incidence and clinical features of this fistula are presented. The diagnosis is difficult. The average length of time between the initial symptoms and the diagnosis is measured in years. In many patients the correct diagnosis is probably never made and in some patients the fistula eventually heals spontaneously. The condition is probably not as rare as is stated in the literature.