question: hi i have an enlarged lymphnodes in left side of my neck..i have this for more than 2 yrs ,,i didnt bother to consult a dr..last wik i had a pre empoloyment medical examination..my x ray showed i have tb in upper left lungs..i ask my dr if there is relevence on my lymphnodes she told that there is no relevance..my question is y didnt i felt any symptoms nor signs that i have ptb??