The appearance of small nodule shadows in the thymus area may be due to enlarged lymph nodes, thymic cysts, thymic tumors, etc. Symptomatic treatment is needed according to the cause of the disease. 1. Enlarged lymph nodes: the appearance of enlarged lymph nodes may be due to infectious diseases, which are categorized into bacterial infection, viral infection and so on. According to the infection pathogen to give anti-infection treatment, septic infection can choose penicillin intravenous treatment, infectious mononucleosis patients can choose acyclovir intravenous treatment, for tuberculosis, can choose isoniazid, rifampicin and other anti-tuberculosis treatment. 2. Thymic cysts: cervical thymic cysts are often manifested as neck lumps, and a few mediastinal thymic cysts can present symptoms of shortness of breath, cough and chest pain. Generally, it can be treated surgically through thoracoscopy and other means. 3. Thymic tumor: Thymoma is the most common primary tumor in the anterior superior mediastinum. Surgery, radiotherapy, chemotherapy and comprehensive treatment are usually chosen, and the drugs include sunitinib, everolimus and other drugs. If abnormal thymic imaging is present, do not self-administer medications and need to seek medical attention as soon as possible to avoid serious complications.