A couple of questions after longterm UC/Crohns?

Hi Guys! Its been a long time since I have been here but I have always got the best answers here. I have had UC for 19 years and lots of ups and downs with flare us.. Originally diagnosed with Crohns but with a few tests and the fact the appearance of the many colonoscopies, it was decided it was UC. Well, my last colonoscopy showed I had active colitis in the anus, which brings me to my first question.
Can you have UC in the anus? I thought that would be Crohns.
I also had 2 precancerous polyps(stressful). They were removed. My Gi said the polyps looked like those he has seen in people over 50 and not the kind that is found in longstanding UC. However, still precancerous. GI said we would monitor with yearly colonoscopies.
So, Next question..being as though I have so many risk factors for Colon Cancer(IBD, consistent inflamation and Precancerous polyps, is it inevitable that I will have to have my colon removed because of Dysplasia? I know you can't predict future but just wanted to know any experiences with this.
Also, since I have colitis in anus, I imagine I am not a candidate for j pouch.
Thanks so much!!
Donna

UC tends to start from the anus and moves upwards in a continuous fashion unlike Crohns in which the inflammation/ulcerations skip areas.

I've never had polyps but I have seen many people on here that get precancerous polyps but never end up with surgery. There is no guarantee that it will turn into cancer which is why the scopes are highly recommended. But time will tell if you were to need surgery.

As for the Jpouch, many people have no issues with the surgery even if they keep their rectum. However, there is a chance that the UC can still attack whatever part is remaining.