There is a round thing felt in the middle of the chest. Common causes include sebaceous cysts, subcutaneous lipomas, and local scar hyperplasia. You can first observe whether there is pain, redness and other symptoms, if necessary, go to the hospital to clarify the cause, according to the cause of targeted treatment. 1, sebaceous cysts: often due to unclean chest skin leading to blockage of the follicular ducts, sebaceous secretions can not be discharged, sebaceous cysts are formed in the body stagnation, in the middle of the chest will feel a round thing, if secondary infection, can be treated with external erythromycin ointment, in After the inflammation subsides, sebaceous cyst removal surgery can be performed at an optional stage; 2. Subcutaneous lipoma: It is often due to the abnormal accumulation of local fat under the skin, forming a lipoma, resulting in a round thing in the middle of the chest when touched. If there is no pain and swelling discomfort, you can observe more, if there is pain and swelling discomfort, or affect the aesthetics, you can perform surgery under anesthesia to remove the treatment; 3, local scar growth: mostly due to open injury in the middle part of the chest or previous chest surgery treatment, resulting in the formation of local scar, scar growth leads to a round thing to touch, at this time can be local freezing, glucocorticoid closure. If conservative treatment is not effective, scar removal surgery can also be performed under the advice of the doctor.