Anterior mediastinal mass shadow consider tumor, inflammation, lymph node enlargement possible. Anterior mediastinal mass shadow is often the result of imaging, patients need to improve the chest enhancement CT to assess the size, location, relationship with the surrounding, enhancement, to guide the choice of diagnosis and treatment options. 1. If the tumor is considered to be a tumor, the benign or malignant nature of the tumor, the need for surgical treatment, and the relationship between the lesion and the surrounding blood vessels and organs should be assessed, as well as the degree of difficulty of surgery and the scope of surgery. 2. If the disease is inflammatory in nature, anti-infective treatment can be carried out first, and then the change of the lesion can be evaluated. If the lesion shrinks significantly after anti-infection treatment, the treatment effect is better, but the end of the treatment also needs to be reviewed on time to avoid inflammation combined with tumor. 3. In the case of enlarged lymph nodes, the nature of the pathology can be clarified by puncture or surgery, which guides whether other treatments are needed. Therefore, anterior mediastinal mass shadow needs to be evaluated according to CT to guide the treatment.