Internet is a very deceptive resource which would put the uncommon conditions as the foremost. Without a background medical knowledge this is difficult to precess and take in right perspective. Thus lot of anxiety can ensue. Lymph nodes are our body's first defense mechanism and infections are the commonest cause of their enlargement. Tonsils are lymph nodes and they enlarge because of infection. We do not first think of cancer, if they are enlarged. A lymph node enlargement with low neutrophils and high lymphocytes point to a chronic infection. A tuberculosis is one of the possibility. Doing a test called as aspiration biopsy cytology (ABC) would confirm the cause of it's enlargement.
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With your counts, involvement of upper lobe, lymph node enlargement, young age, resident of Asia; tuberculosis would be the first diagnostic consideration. An ABC of lymph node, high resolution CT scan (HRCT) of the lung or a PET scan would clinch the diagnosis.
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