Will i have to get surgery and a colostomy if i have colon cancer?

Yes; rarely: The primary treatment for colon and rectal cancer is surgical removal. Some rectal cancers are so close to the anus that it is impossible to remove it without having a colostomy; thankfully, this is the exception rather than the rule.

Yes & No: The main part of colon cancer treatment is surgery, sometimes even when it has spread to other areas. All other treatments (chemotherapy, radiation) are built around surgery for successful results. Except for low-lying rectal cancers most patients do not need a permanent colostomy; many patients do need a temporary colostomy which can be removed after a defined healing period.

Yes and no: Unless you are stage IV disease, the answer is yes and no. If stage IV - depends on a whole host of factors.