There are many kinds of disease factors that can cause bumps on the inside of the thighs, commonly seen in vascular inflammation, lymphatic inflammation, lipoma and so on. There are lumps inside the thigh, then we should distinguish, see if there is pain, if there is pain, consider vascular inflammation, lymphatic inflammation and other effects, will show epidermal redness, swelling, pain and other feelings, mostly due to bacterial, viral and other infections, there will be a localized manifestation of the lumps. If there is no pain, or other adverse reactions, this can be considered a lipoma. Lipoma is a kind of benign tumor, the etiology is not very clear, it may be related to abnormal fat metabolism, heredity, taking certain drugs. Generally there is no need to deal with it, if the lipoma is large and affects daily life or aesthetics, it can be treated by surgical resection and other methods. The above is the analysis is a lump inside the thigh, the more common several cases, patients can combine their own impact for reference, if necessary, it is recommended to go to the hospital in a timely manner, after diagnosis and treatment.