Eleen

Thank you, but I think excisonal biopsy has got disadvantages like multiple surgeries, high reccurence rate etc.

I think repeating FNA 3 or 4 times is better idea
if dignosis is not known. Because FNA takes few minutes and there is no pain and results will be in one or two days and there are no risks.

With out knowing what it is and doing excisonal biopsy there is always risk for reccurence unless you do radiation also in surrounding tissues.