Soft lump in the left groin of men may be due to inguinal lymphadenitis, inguinal sebaceous cyst, lipoma and other reasons. 1. Inguinal lymphadenitis: Inguinal lymphadenitis will cause lymph nodes in the groin to swell and form a lump, and accompanied by obvious pressure and pain symptoms. Some patients also have fever and other symptoms. 2. Inguinal sebaceous cysts: inguinal cysts will cause local skin swelling, redness, pain, patients will produce obvious localized swelling, smooth surface and not easy to push, usually and the skin will appear adhesion. 3. Lipoma: the lump formed by lipoma usually has clear boundary and soft texture. In the early stage, there are usually no obvious symptoms, and with the development of the disease, there may be local numbness and pain. Men with soft lumps in the left groin may also be caused by other diseases, such as left inguinal hernia, skin abscesses and so on. You should consult a doctor in time to avoid aggravation of the condition.