Thickening of the raphe may be caused by old trauma, costochondritis, compression of organs, tumors, etc. 1. Old trauma: If there has been a fracture or other injury below the chest, bone growth may occur during the healing process, resulting in the thickening of the raphe. 2. Costochondritis: If inflammation occurs in the costal cartilage, it may lead to local thickening of the soft tissues, which is manifested as thickening of the raphe. 3. Extrusion of organs: If you suffer from pericarditis, pericardial effusion or cardiac hypertrophy, the sternum will protrude forward under the extrusion of the heart, resulting in the anterior protrusion of the xiphoid process, which will lead to the thickening of the xiphoid process in the long run. 4. Tumor: Tumors near the raphe, such as stomach tumors, may squeeze the raphe and make it protrude forward. For the specific causes of raphe thickening, it is recommended that the patient go to the hospital for consultation, and under the guidance of the clinician, carry out examinations to clarify the causes and take targeted treatment.