Hi My son has had swollen lymph nodes in his groin (only). His primary told him that if the glands are still swollen for two more weeks, he should see a hematologist. The primary spoke about lymphoma- but the research that I have done would suggest that swollen lymph glands in the groin would suggest something that is located in the lower half of the body- not systemic. My son has decided to wait a few more weeks to see if the glands go done- and this is a worry to me. Any ideas?