Buns on inner thighs may be caused by enlarged lymph nodes, lipoma, dermatofibroma and other factors. 1. Enlarged lymph nodes: localized enlarged lymph nodes can also lead to the symptom of localized skin pouching, which may be related to syphilis, gonorrhea and other infectious diseases of the reproductive system. 2. Lipoma: it is a kind of common soft tissue benign tumor, common in limbs, trunk and other parts of the body, usually is a small size of the border clear mass, the texture is soft, elastic, usually painless. 3. Dermatofibroma: may be due to excessive proliferation of skin fibroblasts, excessive production of extracellular matrix and the resulting benign tumors, often green beans or soybean size, more than no obvious self-conscious symptoms. The bag on the inner thigh may also be due to other factors, it is recommended that the patient timely medical treatment, and actively cooperate with the relevant examination, in order to clarify the cause of the disease, targeted treatment.