Boaz,
My husband has been having "problems" down there. He was fine after the operation; now he's having problems with pain in his penis, frequent and pain when passing urine, plus he has difficulty ejaculating (it's extremely painful). The doctors have sent him for numerous tests and scans and all come up empty handed. His problems started after he was put on chemotherapy. He had a stent removed from his ureter about the same time he started chemo. And just before he is due for his next chemo drip (every two weeks) the pain in his penis subsides a bit. Right after chemo, it flares up. I'm not a doctor - and the doctors are not coming up with any explanation - but I think this is a side effect of chemotherapy.
As for the reproductive organs. It is my understanding that a colon resection will not impact one's sex life. Issues with having a colostomy might happen, but that is easily solved with flesh coloured garments that hide the bag and a partner who is kind and understanding. I have a friend who had a colostomy in 1997 from his colon resection . He now has three fine sons.
However, I do believe -- at least from what my husband is currently going through -- that the chemotherapy can create problems down there. Penis neuropathy seems to be happening with my husband.
Paula Jean