in the axilla,groin region get enlarged due to various causes like Tuberculosis
Get a simple Fine Needle Aspiration Cytology(FNAC) of any one lymphnode. It will almost clinches the diagnosis.
If FNAC is inconclusive,get a Lymphnode removed and send it for Histopathological examination(Biopsy
Based on the report,you follow the treatment with the consultation of your doctor.
If you come back with reports,i will clarify further.
Wish you good health