With UC, all of the large intestine is always taken since UC is virtually guaranteed to come back in any remaining intestine meaning further ops. It can be an ileostomy, j pouch, kock's pouch or BCIR (all have the same end result - no large intestine).
With Cancer or CD, it can be an ileostomy or colostomy, depending on the extent of the damage. With CD, they try and preserve as much of the intestine as possible so if it's affecting only part of it, then they will remove only part of it. Trauma can make either type of ostomy necessary too.
Hope this helps.
I have had an ileostomy for 32 years now due to UC.
Moderator of the Ostomy Forum
I'm not a complete idiot - some parts of me are missing!