"The lymph nodes
in the groin (femoral or inguinal lymph nodes
) may swell from an injury or infection in the foot, leg, groin, or genitals. In rare cases, testicular cancer, lymph
oma, or melanoma may cause a lump in this area"
By altered stool, do you mean that bowel movement still leaves you feeling as if you are still not done?
When was your last IVIg treatment?