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, lymphoma, or melanoma may cause a lump in this area.
Glands above the collarbone (supraclavicular lymph nodes) may swell from an infection or tumor in the areas of the lungs, breasts, neck, or abdomen.
Common sites for swollen lymph nodes camera include the neck, groin, and underarms.