Brief Answer:
Chronic infection or
rheumatoid arthritis.
Detailed Answer:
Hi XXXX,
Thanks for writing to XXXXXXX
I went through your query and understood your concerns.
Follicular
hyperplasia in lymph node is basically due to stimulation of B- cell(a cell which fights against foreign material in body). Common cause for follicular changes in lymphnode is repeated infection could be bacterial or viral. Follicular hyperplasia must be distinguished from
follicular lymphoma (bcl-2 protein is expressed in neoplastic follicles, but not reactive follicles). As in your case malignancy is ruled out, its a good sign. Not to worry.
Increased lymphocytes indicates infection which is not adequately treated for long time resulting in chronic infection, repeated infection can result in enlarged lymph nodes.
If a patient comes to me with these symptoms first I would like do completely physical examination to check for source of infection:
throat infection, any tooth caries, nasal sinus, ear examination. So first I would like rule out source of infection first order including
Tuberculosis, HIV as well. As your
lymph node biopsy is negative for malignancy, I would still like to order an excisional biopsy by removing the lymph node completely and sending for HPE by pathologist. Your above mentioned symptoms are common in infection or other immune abnormalities. Rheumatoid arthritis(though RA factor negative) is in picture because of your
joint pains. A negative RF does not rule out RA, because of this low specificity.
Please take my opinion to your primary physician.
Wish you a good health
Regards