A hard lump in the middle of the chest in the lower concavity also does not hurt may be caused by the raphe, lipoma, sebaceous cysts and other causes.
1. Sword protrusion: Sword protrusion is located at the lower end of the sternal body, which is a piece of protrusion. Thin people or people who have suffered from rickets can easily feel the xiphoid process, and most of them have no pain.
2. Lipoma: Lipoma is a common benign soft tissue tumor. A lump of lipoma can be palpated in the middle of the chest in the lower concavity without pain.
3. Sebaceous cysts: Sebaceous cysts are asymptomatic cysts formed when the ductal opening of sebaceous glands in the skin is blocked, resulting in the accumulation of sebaceous secretions. Sebaceous cysts in the middle and lower recesses of the sternum can promote lumps without pain.
Hard lumps in the lower concavity in the middle of the chest may also be other causes, please go to the regular hospital in time, under the guidance of the doctor to identify the causes and give appropriate treatment.