Yes. Make sure you contact the Pelvic Radiation Disease Association. They gave me the details of a doctor who specialised in this at a hospital about an hour's drive from my home. My cancer hospital referred me there.
I was given a SEHCAT scan to check bile salt reabsorption and a colonoscopy.
In the end, I opted for treatment to help control my bowel movements....I was basically bowel incontinent at that time.