Thanks for writing in.
It seems that the node which was removed was non-malignant (ie, there was no lymphoma). When an entire node is removed, that gives the best tissue and picture and if that is negative, then I would go with that. Needle biopsies can sometimes be very misleading, especially for these low-grade lymphomas.
It has been 4 years and she is doing well. I see no reason why we would be concerned about it coming back.
I feel she will continue to do just fine!
Hope that this information helps and hope that you will get better soon.
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Dr. Indranil Ghosh