The causes of raised tendons in the abdomen under the right breast of a man include phlebitis, cirrhosis of the liver, tumors in the abdominal wall, trauma and so on. 1. Phlebitis: if various factors cause inflammation of veins, then the blood return of veins is not smooth, which leads to varicose veins, and the phenomenon of abdominal bulge is painful to touch. 2. Cirrhosis: when the patient has cirrhosis of the liver, the pressure of the portal vein rises and the venous return is blocked, which triggers varicose veins of the abdominal wall, and the phenomenon of abdominal tendon bumping and touching pain will also appear. 3. Abdominal wall tumor: if the right side of the abdominal wall has tumor, such as sclerofibroma, etc., there will be abdominal wall with tendons raised and painful to touch. 4. Trauma: if the external force triggers the injury of abdominal soft tissues, the abdominal tissues can be swollen and painful and other symptoms. Finally, the phenomenon of men with tenderness and pain in the abdomen under the right breast should consult a doctor in time.