HI Thank for using HCM, I think, if you have not try steroid, then try it, it gives good result in disease like allergic granulomatosis and can be taken for longer duration, one more thing you can do,, wait for some time for natural remission, the chance of it is fairly enough, these thing should be taken in account before starting immunosuppressive drug, because if no natural emission occurs, then the course of disease is much longer some time life long, then you can start the immunosuppressive drug, now you already started the Cellcept, so you discus with your doctor for to omit it, for some time, have nice day.