Protruding bones in the middle of the ribs in the chest can be seen in diseases such as costochondritis, rickets and bone tumors. 1. costochondritis: can be caused by infection, chronic strain, etc., there will be symptoms of chest tightness, the lump pressure pain is obvious. 2. Rickets: when rickets develops to the late stage, there will be deformity changes such as chicken breast, which is manifested as a prominent bone in front of the chest. In addition, there will be irritability, excessive sweating, irritability and other symptoms in the early stage. 3. Bone tumor: protruding bones in the chest, there may be a bone tumor, the typical manifestation of swelling, pain, aggravated by coughing, in addition, there will be symptoms of dyspnea. If you find a protruding bone in the chest, you must go to the hospital in time, do not delay the condition.