A fleshy lump on the chest can be a condition such as keloids, warts, sebaceous cysts and lipomas. 1. Keloid: scar is a large amount of connective tissue proliferation and hyaline degeneration, the formation of excessive growth of scar. It manifests itself as a smooth, pinkish-red growth on the surface of the skin, accompanied by itching in some patients, and is most common in people with keloid scars. 2. Warts: patients who have human papillomavirus infection in the chest will show the symptoms of flesh bumps on the chest. 3. Sebaceous cysts: sebaceous glands secrete sebum, which cannot be normally discharged from the follicular opening, thus accumulating in the chest to form cysts, manifesting as pimples on the chest, which are usually painless and itchy. 4. Lipoma: it is a kind of benign tumor, mostly seen in the abnormal accumulation of subcutaneous adipose tissue and the formation of benign tumors. If the volume is small, it usually does not need to be handled. If the volume is large, surgery is needed for excision. Patients with a lump on the chest, it is recommended that patients go to the hospital in a timely manner, to clarify the cause of the disease under the guidance of the doctor reasonable treatment.