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.
Systemic infections may also cause lymph node swelling of the three main groups â groin, neck or armpits. 1  Sexually transmitted diseases (STDs) such as syphilis, gonococcal infection, chancroid, herpes simplex, lymphogranuloma venereum (LGV) may cause swelling of the inguinal lymph nodes.hey often swell due to an infection or cancer in the areas from which they drain lymph (lymphatic fluid). For this reason, swelling of the groin lymph nodes is an important clinical indication of pathology within the lower abdominal wall, legs, groin, buttocks, anus, perineum and external genitalia.