I’m almost 73. Diagnosed with CD in 2001. I just had surgery to resect my right ureter due to scar tissue from a really large stone. A 2.5-4 hour procedure took nearly 9 hours. Why? Scar tissue in my abdomen due to many years of inflammation due to CD. My colon attached to my abdominal wall. My ureter was encased with scar tissue. I’ll be fine. Just a word to the wise long-term CD sufferers.