While you have not had any obvious symptoms that have caused you to think your CD was active during these last 18 months, it seems it was. At some point the mucosa of the colon became so thin and weakened from the inflammation, that it caused it to begin to "tunnel" outward. This fistula was quietly "tunneling" and unfortunately hooked up with your bladder. I guess it is possible that this process started before you felt you were in remission. I guess this is a question you are going to have to ask your doctor. Sorry I don't have a definitive answer....
Moderator Crohn's Disease Forum
CD, Ankylosing Spondylitis, small fiber peripheral neuropathy, avascular necrosis, diffuse connective tissue disease, Sjogren's Syndrome ?