do you recommend having any radiation or chemo therapy after having a surgery for squamous cell carcinoma of the mouth? My Mom has to have an 8 to 10 hour surgery in the very near future to remove a tumor in her mouth and jaw then they will do the flap reconstruction and she had this cancer a year ago which they thought they had removed it all and now it is back and larger with a tumor . wondering if we need to have the other radiation and chemo therapies after to make sure all the cancer is gone totally? they are also removing one lymph node in her mouth area that has been swollen. thanks for info in advance.