Patient: he underwent left upper lobectomy in your hospital on June 11, 2010, postoperative pathology: middle differentiated squamous cell carcinoma in the upper lobe of the left lung, the tumor involves the pleura of the dirty layer, does not involve the lobe and the segmental bronchus, there is no cancer at the edge of the bronchus, and the surrounding lungs show lung siltation, there is no metastasis of cancer in lymph nodes (0/24), and the size of the tumor is 3*2*2cm. the cisplatin combined with vincristine was prescribed as the chemotherapy regimen in your hospital. The patient doesn’t want to do chemotherapy, and now it’s already 18 days after the operation, may I ask the expert whether chemotherapy can be done in his case?