Unfortunately, there are cases like this. I showed in my presentation the typical types of operations that we may do, to remove one section and join it back up to restore continuity. So of course, you have got the rest of the large intestine there. Usually, a surgeon tries to save as much as they can, so that you can maintain the function of your intestine.
But of course, the remnant large intestine or colon or rectum will have a risk of developing cancer and in fact, that person, who had the first cancer is at an increased risk given that he had developed that first cancer, there is a suspicion that he has got the risk factors.
The same risk factors will also apply to the rest of the intestine that is left behind. So, it is possible to get cancer the second time. In some cases where someone has a family history of colorectal cancer and one member newly develops cancer, sometimes the surgeon will recommend removing more of the colon than what is typically required just for the treatment of that cancer and to reduce the risk of a second cancer occurring.
