Hi welcome to health care magic. You have mentioned in history as having cancer in back of neck .. The treatment protocol depend on histopathology report means grading of tumor , to which extent it has spread in body called metastasis and degree of Lymph node involvement etc.. If possible TNM staging also done...As it is malignant tumor, needs to be excised ... If needed and found suitable than radiotherapy or chemotherapy might needed according to type of tumour You can upload photo of lesion and histopathology report for detail comment Take care Advise : Consult Oncosurgeon for detail work up of your condition