My lymph nodes of the neck has been swelled from past 3 months. I had done usg 2 times. In my first report sad measuring 5.5mm and after 2 months when I have done it again it measured 6mm. Whenever I take medicine it goes underneath and after sometimes it will again get swelled. Diclofinac plus Serra pera affects the area but it will not get cured. After stopping medicine my lymph nodes swelled again and comes out. Doctor suggest me to go for fnac test is it secure to do fnac test. Why it get swelled again and again. Pls give me the appropriate suggestions or treatment. My usg reports are.