I'm sorry for for conditions and concerns. I would go to an ENT. The doctor can do a visual and palpable exam. If possible, he may be able to get a biopsy sample, punch, brush. But incisional is most accurate. but the back of the throat is difficult to get at, and may require biopsy under anesthesia. A FNAB, fine needle aspirational biopsy, under sonogram guidance, is very accurate to test the lymph node, and can be done in 15 minutes, usually by a pathologist, but some ENT's do them. They can tell more from this biopsy, and type of cancer. They can order further diagnostic testing, such as a CT, MRI, and PET/CT scan. Good luck.