The swelling and pain in the chest of male patients may be caused by breast diseases. Patients may have abnormal hormone secretion due to endocrine disorders, which may cause chest swelling and pain, or may be caused by breast enlargement, mastitis, breast cancer and other diseases. Male patients are also at risk of breast diseases, which can be diagnosed through hormone examination and ultrasound examination. In addition to breast diseases, heart diseases may also cause patients to have chest swelling and pain, such as myocarditis, myocardial ischemia, heart disease, etc. Patients can determine the condition by checking cardiac ultrasound and electrocardiogram. In addition, pleurisy, gastric ulcer, cholecystitis, hepatitis, pneumonia, costochondritis, and pancreatic diseases can cause chest swelling and pain, which require patients to undergo blood tests, ultrasound, CT, etc. to determine the cause of the disease and provide timely treatment. Tumor diseases can also cause chest pain, such as pancreatic cancer, liver cancer, lung cancer, etc. Patients will also have pain in other parts of the body, so it is important to identify the cause and treat it in time.