Hi and welcome to HCM,thank you for your query.
Well,non hodgkin is easily diagnosed by biopsy
and I am sure it would be found since you did so many complex diagnostic tests. reactive hypeplassia is non specific reaction of lymph
nodes and usually this is caused by some sysetmic infection and this may be good sign for you since it means that you are not having cancer.You should just do frequent follow up of these lymph nodes.
Wish you good health. Regards