The mediastinal lymphatic swelling of 10mm more than one year after lung cancer surgery may be caused by tumor metastasis and inflammation, and anti-cancer and anti-infection treatment is needed. Please follow the doctor’s instruction. 1. Tumor metastasis, the first choice of treatment for 10mm mediastinal lymphoma due to recurrent metastasis is surgical resection, and radiotherapy and chemotherapy can be carried out after surgery; patients who cannot undergo surgery need to undergo comprehensive treatments such as radiotherapy, chemotherapy and targeted therapy. 2. Inflammation, there are some patients because of inflammation caused by lymphatic enlargement, belonging to benign lesions, can choose to use penicillin, amoxicillin and other drugs for treatment.