Hmmm. I have never heard of a long colon causing IBS. Its a new one on me. Here is what I can tell you. Supposedly, IBS can not cause physical tears or holes or scarring. Surgery is an extreme measure and I would not consider it unless your symptoms are very very extreme. I have been told that IBS is a disorder of colon motility. I don't see how chopping off a peice of your colon will help the sensitivity of the remaining peices of your colon. If anything, I would be worried that surgery would exasterbate the symptoms. I know every fistula and fissure surgery I have had has come with the potential consequence of incontinence. (No worries, I have been lucky .) Its your choice, but be sure to weigh the options and consequences of each possible treatment. My vote is for simply learning live with and treat your symptomology. For certain, I would get a second opinion before having any surgery...especially removal of a non-diseased colon. Good luck!