Had the old bladder fistula about 11 years ago. My first symptoms were passing air when I urinated. It only escalated from there, if you know what I'm saying. Long story short- my doctors put me on TPN for about a month until I had it surgically removed along with a resection at Mount Sinai NY,NY. Ten years on I have not had any problems with this recurring. Only thing I notice is that I urinate more often.