I have been using Canada and Lialda for a few years and my UC has been under control. The past few months, however, my UC has been worse than ever. My doctor says that continuing on my present path will certainly result in cancer. Our only other option is Humira. I am concerned about the possibility of developing lymphoma. I also have asthma and frequent sinus infections, as well as other autoimmune conditions which cause fevers. My concern about this is knowing what fevers may be from autoimmune disorders and what fevers may indicate a complication from Humira therapy. I have to decide which course of action I want to take before I see my doctor again next month. Please help. Any information is greatly appreciated.