FNAB are very accurate, just as good as a direct biopsy, and had had 7 or 8 myself, which were all on target. There are a number of types of neck dissections, and seven levels, I-VII, to the cervical neck, and depends on the location, type of cancer, which levels, and structures, are removed. Oral, tongue cancer usually involves level I first, oropharynx level II, so these are usually removed in the dissection up to IV or V, but there can be skip metastases or co-involvement with other levels. Every surgery has risks, and mine were positive so far, but all it takes is once to change all that, and our ENT's probably make it seem, sound easy, but it is a complicated surgery with all the vital structures affecting all aspects of life. I had three neck dissections, two were radical, all on the left side of the neck, going for my fourth.

Good luck.