Fibrotic tissue in anal canal

texasgirl2023

I am 3 months post chemo/radiation treatment of stage III anal cancer. At my recent post treatment appt my colorectal surgeon did a digital exam and said I had fibrotic tissue in my anal cavity. I have a colonoscopy and examination of my rectum scheduled for June. I have had extremely narrow stools and take MiraLax daily, sometimes twice a day. Sometimes I go days without a bowel movement. My stomach is a mess. During my treatment I had grade 4 mucositis of the mouth and was hospitalized for 8 days. My 2nd round of chemo was reduced to 50% due to the severe reaction. My colorectal surgeon said since I had such a severe reaction it is best to have a colonoscopy to see what is going on. That maybe the Nicosia also impacted my colon. Has anyone else been told they have fibrotic tissue of the anal canal that is causing stool narrowing? If yes, what was done (if anything ) to fix this?