Actinic keratosis (AK) (also called solar keratosis or sun spots ) is a common precancerous skin condition caused by excessive exposure to ultraviolet light. Skin cancer â the abnormal growth of skin cells â most often develops on skin exposed to the sun.
1 A rare cause of axillary swelling may be breast cancer or lymphoma. 2  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.3  In rare cases, testicular cancer, lymphoma, or melanoma may cause a lump in this area. A rare cause of axillary swelling may be breast cancer or lymphoma. 2  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.
Some medications and allergic reactions to medications can cause the lymph nodes to swell. Antiseizure and antimalarial drugs can also cause lymph nodes to swell. Sexually transmitted infections, such as syphilis or gonorrhea, can cause the lymph nodes in the groin area to swell. Other causes of swollen lymph nodes include: cat scratch fever