question: I have Follicular Lymphoma ( initially large cell follicular ) treated with R CHOP and put in remission for 3 years. Relapsed one year ago with follicular only and treated with Rituxan. Had a 3 month remission and than relapsed. Being treated again with Rituxan. Cancer returned to left side of neck and clavicle both relapses. However--I am now experiencing sciatic pain ( with no cause) could this be the lymphoma?38 years old female